Osmosis in Cell Membranes

This quiz explores the concept of osmosis in cell membranes, focusing on the movement of water into outermost cells of roots by osmosis and its implications on cell sap. It covers topics such as active transport, diffusion, pressure in cell contents, and the role of water movement in maintaining the water/salt balance in organisms. The quiz challenges understanding and knowledge of cellular processes related to water and solute movement across membranes.

• Osmosis
• Cell Membranes
• Active Transport
• Diffusion
• Water Movement

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1. 2.2.6 Movement through Cell Membranes Follow-Me iQuiz

2. Q. Water enters the outermost cells of the root by osmosis. What does this tell you about the cell sap of these outermost cells? Movement of molecules against a concentration gradient using energy Movement of molecules against a concentration gradient using energy Active transport Substances can be allowed or prevented in or out Substances can be allowed or prevented in or out Active transport Movement of molecules from area of high concentration to area of lower concentration Movement of molecules from area of high concentration to Allowing some substances to pass through Support Allowing some substances to pass through Support Movement of water along a concentration gradient through a selectively permeable membrane area of lower concentration Vacuole; Cell wall; Cell sap Bacteria lose water by osmosis, this leads to inactivity or death Movement of water along a concentration gradient through a selectively permeable membrane Vacuole; Cell wall; Cell sap Bacteria lose water by osmosis, this leads to inactivity or death No energy (ATP) required Chloroplast; Mitochondrion; Nucleus; Vacuole Visking tubing No energy (ATP) required Chloroplast; Mitochondrion; Nucleus; Vacuole Visking tubing Controlling the water/salt balance within an organism Osmosis Water movement between cells or from soil to root Controlling the water/salt balance within an organism Water movement between cells or from soil to root Osmosis Diffusion; Osmosis; Active transport Water; Sugar; Sap; Salt(s); Protein Oxygen; Glucose; Water; Amino acids; Phosphate; Iron Diffusion; Osmosis; Active transport Water; Sugar; Sap; Salt(s); Protein Oxygen; Glucose; Water; Amino acids; Phosphate; Iron Pressure of cell contents on cell wall FALSE TRUE Wilting Pressure of cell contents on cell wall FALSE TRUE Wilting Lower water concentration; Higher solute concentration Root hairs Xylem Lower water concentration; Higher solute concentration Root hairs Xylem

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4. Q. Osmosis has been described as a special case of diffusion. Explain why. Movement of molecules against a concentration gradient using energy Active transport Substances can be allowed or prevented in or out Movement of molecules against a concentration gradient using energy Substances can be allowed or prevented in or out Active transport Movement of molecules from area of high concentration to area of lower concentration Movement of molecules from area of high concentration to Allowing some substances to pass through Support Allowing some substances to pass through Support Movement of water along a concentration gradient through a selectively permeable membrane area of lower concentration Vacuole; Cell wall; Cell sap Bacteria lose water by osmosis, this leads to inactivity or death Movement of water along a concentration gradient through a selectively permeable membrane Vacuole; Cell wall; Cell sap Bacteria lose water by osmosis, this leads to inactivity or death No energy (ATP) required Chloroplast; Mitochondrion; Nucleus; Vacuole Visking tubing No energy (ATP) required Chloroplast; Mitochondrion; Nucleus; Vacuole Visking tubing Controlling the water/salt balance within an organism Osmosis Water movement between cells or from soil to root Controlling the water/salt balance within an organism Water movement between cells or from soil to root Osmosis Diffusion; Osmosis; Active transport Water; Sugar; Sap; Salt(s); Protein Oxygen; Glucose; Water; Amino acids; Phosphate; Iron Diffusion; Osmosis; Active transport Water; Sugar; Sap; Salt(s); Protein Oxygen; Glucose; Water; Amino acids; Phosphate; Iron Pressure of cell contents on cell wall FALSE TRUE Wilting Pressure of cell contents on cell wall FALSE TRUE Wilting Lower water concentration; Higher solute concentration Root hairs Xylem Lower water concentration; Higher solute concentration Root hairs Xylem

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6. Q. What is meant by a selectively permeable membrane? Movement of molecules against a concentration gradient using energy Active transport Substances can be allowed or prevented in or out Movement of molecules against a concentration gradient using energy Substances can be allowed or prevented in or out Active transport Movement of molecules from area of high concentration to area of lower concentration Movement of molecules from area of high concentration to Allowing some substances to pass through Support Allowing some substances to pass through Support Movement of water along a concentration gradient through a selectively permeable membrane area of lower concentration Vacuole; Cell wall; Cell sap Bacteria lose water by osmosis, this leads to inactivity or death Movement of water along a concentration gradient through a selectively permeable membrane Vacuole; Cell wall; Cell sap Bacteria lose water by osmosis, this leads to inactivity or death No energy (ATP) required Chloroplast; Mitochondrion; Nucleus; Vacuole Visking tubing No energy (ATP) required Chloroplast; Mitochondrion; Nucleus; Vacuole Visking tubing Controlling the water/salt balance within an organism Osmosis Water movement between cells or from soil to root Controlling the water/salt balance within an organism Water movement between cells or from soil to root Osmosis Diffusion; Osmosis; Active transport Water; Sugar; Sap; Salt(s); Protein Oxygen; Glucose; Water; Amino acids; Phosphate; Iron Diffusion; Osmosis; Active transport Water; Sugar; Sap; Salt(s); Protein Oxygen; Glucose; Water; Amino acids; Phosphate; Iron Pressure of cell contents on cell wall FALSE TRUE Wilting Pressure of cell contents on cell wall FALSE TRUE Wilting Lower water concentration; Higher solute concentration Root hairs Xylem Lower water concentration; Higher solute concentration Root hairs Xylem

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8. Q. Give locations in a cell at which there is a selectively permeable membrane. Movement of molecules against a concentration gradient using energy Active transport Substances can be allowed or prevented in or out Movement of molecules against a concentration gradient using energy Substances can be allowed or prevented in or out Active transport Movement of molecules from area of high concentration to area of lower concentration Movement of molecules from area of high concentration to Allowing some substances to pass through Support Allowing some substances to pass through Support Movement of water along a concentration gradient through a selectively permeable membrane area of lower concentration Vacuole; Cell wall; Cell sap Bacteria lose water by osmosis, this leads to inactivity or death Movement of water along a concentration gradient through a selectively permeable membrane Vacuole; Cell wall; Cell sap Bacteria lose water by osmosis, this leads to inactivity or death No energy (ATP) required Chloroplast; Mitochondrion; Nucleus; Vacuole Visking tubing No energy (ATP) required Chloroplast; Mitochondrion; Nucleus; Vacuole Visking tubing Controlling the water/salt balance within an organism Osmosis Water movement between cells or from soil to root Controlling the water/salt balance within an organism Water movement between cells or from soil to root Osmosis Diffusion; Osmosis; Active transport Water; Sugar; Sap; Salt(s); Protein Oxygen; Glucose; Water; Amino acids; Phosphate; Iron Diffusion; Osmosis; Active transport Water; Sugar; Sap; Salt(s); Protein Oxygen; Glucose; Water; Amino acids; Phosphate; Iron Pressure of cell contents on cell wall FALSE TRUE Wilting Pressure of cell contents on cell wall FALSE TRUE Wilting Lower water concentration; Higher solute concentration Root hairs Xylem Lower water concentration; Higher solute concentration Root hairs Xylem

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10. Q. What is diffusion? Movement of molecules against a concentration gradient using energy Active transport Substances can be allowed or prevented in or out Movement of molecules against a concentration gradient using energy Substances can be allowed or prevented in or out Active transport Movement of molecules from area of high concentration to area of lower concentration Movement of molecules from area of high concentration to Allowing some substances to pass through Support Allowing some substances to pass through Support Movement of water along a concentration gradient through a selectively permeable membrane area of lower concentration Vacuole; Cell wall; Cell sap Bacteria lose water by osmosis, this leads to inactivity or death Movement of water along a concentration gradient through a selectively permeable membrane Vacuole; Cell wall; Cell sap Bacteria lose water by osmosis, this leads to inactivity or death No energy (ATP) required Chloroplast; Mitochondrion; Nucleus; Vacuole Visking tubing No energy (ATP) required Chloroplast; Mitochondrion; Nucleus; Vacuole Visking tubing Controlling the water/salt balance within an organism Osmosis Water movement between cells or from soil to root Controlling the water/salt balance within an organism Water movement between cells or from soil to root Osmosis Diffusion; Osmosis; Active transport Water; Sugar; Sap; Salt(s); Protein Oxygen; Glucose; Water; Amino acids; Phosphate; Iron Diffusion; Osmosis; Active transport Water; Sugar; Sap; Salt(s); Protein Oxygen; Glucose; Water; Amino acids; Phosphate; Iron Pressure of cell contents on cell wall FALSE TRUE Wilting Pressure of cell contents on cell wall FALSE TRUE Wilting Lower water concentration; Higher solute concentration Root hairs Xylem Lower water concentration; Higher solute concentration Root hairs Xylem

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12. Q. Why is diffusion alternatively known as passive transport? Movement of molecules against a concentration gradient using energy Active transport Substances can be allowed or prevented in or out Movement of molecules against a concentration gradient using energy Substances can be allowed or prevented in or out Active transport Movement of molecules from area of high concentration to area of lower concentration Movement of molecules from area of high concentration to Allowing some substances to pass through Support Allowing some substances to pass through Support Movement of water along a concentration gradient through a selectively permeable membrane area of lower concentration Vacuole; Cell wall; Cell sap Bacteria lose water by osmosis, this leads to inactivity or death Movement of water along a concentration gradient through a selectively permeable membrane Vacuole; Cell wall; Cell sap Bacteria lose water by osmosis, this leads to inactivity or death No energy (ATP) required Chloroplast; Mitochondrion; Nucleus; Vacuole Visking tubing No energy (ATP) required Chloroplast; Mitochondrion; Nucleus; Vacuole Visking tubing Controlling the water/salt balance within an organism Osmosis Water movement between cells or from soil to root Controlling the water/salt balance within an organism Water movement between cells or from soil to root Osmosis Diffusion; Osmosis; Active transport Water; Sugar; Sap; Salt(s); Protein Oxygen; Glucose; Water; Amino acids; Phosphate; Iron Diffusion; Osmosis; Active transport Water; Sugar; Sap; Salt(s); Protein Oxygen; Glucose; Water; Amino acids; Phosphate; Iron Pressure of cell contents on cell wall FALSE TRUE Wilting Pressure of cell contents on cell wall FALSE TRUE Wilting Lower water concentration; Higher solute concentration Root hairs Xylem Lower water concentration; Higher solute concentration Root hairs Xylem

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14. Q. Explain the biological basis for the use of high sugar or high salt concentrations in the preservation of food. Movement of molecules against a concentration gradient using energy Active transport Substances can be allowed or prevented in or out Movement of molecules against a concentration gradient using energy Substances can be allowed or prevented in or out Active transport Movement of molecules from area of high concentration to area of lower concentration Movement of molecules from area of high concentration to Allowing some substances to pass through Support Allowing some substances to pass through Support Movement of water along a concentration gradient through a selectively permeable membrane area of lower concentration Vacuole; Cell wall; Cell sap Bacteria lose water by osmosis, this leads to inactivity or death Movement of water along a concentration gradient through a selectively permeable membrane Vacuole; Cell wall; Cell sap Bacteria lose water by osmosis, this leads to inactivity or death No energy (ATP) required Chloroplast; Mitochondrion; Nucleus; Vacuole Visking tubing No energy (ATP) required Chloroplast; Mitochondrion; Nucleus; Vacuole Visking tubing Controlling the water/salt balance within an organism Osmosis Water movement between cells or from soil to root Controlling the water/salt balance within an organism Water movement between cells or from soil to root Osmosis Diffusion; Osmosis; Active transport Water; Sugar; Sap; Salt(s); Protein Oxygen; Glucose; Water; Amino acids; Phosphate; Iron Diffusion; Osmosis; Active transport Water; Sugar; Sap; Salt(s); Protein Oxygen; Glucose; Water; Amino acids; Phosphate; Iron Pressure of cell contents on cell wall FALSE TRUE Wilting Pressure of cell contents on cell wall FALSE TRUE Wilting Lower water concentration; Higher solute concentration Root hairs Xylem Lower water concentration; Higher solute concentration Root hairs Xylem

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16. Q. What did you use as the selectively permeable membrane in your investigation of osmosis? Movement of molecules against a concentration gradient using energy Active transport Substances can be allowed or prevented in or out Movement of molecules against a concentration gradient using energy Substances can be allowed or prevented in or out Active transport Movement of molecules from area of high concentration to area of lower concentration Movement of molecules from area of high concentration to Allowing some substances to pass through Support Allowing some substances to pass through Support Movement of water along a concentration gradient through a selectively permeable membrane area of lower concentration Vacuole; Cell wall; Cell sap Bacteria lose water by osmosis, this leads to inactivity or death Movement of water along a concentration gradient through a selectively permeable membrane Vacuole; Cell wall; Cell sap Bacteria lose water by osmosis, this leads to inactivity or death No energy (ATP) required Chloroplast; Mitochondrion; Nucleus; Vacuole Visking tubing No energy (ATP) required Chloroplast; Mitochondrion; Nucleus; Vacuole Visking tubing Controlling the water/salt balance within an organism Osmosis Water movement between cells or from soil to root Controlling the water/salt balance within an organism Water movement between cells or from soil to root Osmosis Diffusion; Osmosis; Active transport Water; Sugar; Sap; Salt(s); Protein Oxygen; Glucose; Water; Amino acids; Phosphate; Iron Diffusion; Osmosis; Active transport Water; Sugar; Sap; Salt(s); Protein Oxygen; Glucose; Water; Amino acids; Phosphate; Iron Pressure of cell contents on cell wall FALSE TRUE Wilting Pressure of cell contents on cell wall FALSE TRUE Wilting Lower water concentration; Higher solute concentration Root hairs Xylem Lower water concentration; Higher solute concentration Root hairs Xylem

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18. Q. What is active transport? Movement of molecules against a concentration gradient using energy Active transport Substances can be allowed or prevented in or out Movement of molecules against a concentration gradient using energy Substances can be allowed or prevented in or out Active transport Movement of molecules from area of high concentration to area of lower concentration Movement of molecules from area of high concentration to Allowing some substances to pass through Support Allowing some substances to pass through Support Movement of water along a concentration gradient through a selectively permeable membrane area of lower concentration Vacuole; Cell wall; Cell sap Bacteria lose water by osmosis, this leads to inactivity or death Movement of water along a concentration gradient through a selectively permeable membrane Vacuole; Cell wall; Cell sap Bacteria lose water by osmosis, this leads to inactivity or death No energy (ATP) required Chloroplast; Mitochondrion; Nucleus; Vacuole Visking tubing No energy (ATP) required Chloroplast; Mitochondrion; Nucleus; Vacuole Visking tubing Controlling the water/salt balance within an organism Osmosis Water movement between cells or from soil to root Controlling the water/salt balance within an organism Water movement between cells or from soil to root Osmosis Diffusion; Osmosis; Active transport Water; Sugar; Sap; Salt(s); Protein Oxygen; Glucose; Water; Amino acids; Phosphate; Iron Diffusion; Osmosis; Active transport Water; Sugar; Sap; Salt(s); Protein Oxygen; Glucose; Water; Amino acids; Phosphate; Iron Pressure of cell contents on cell wall FALSE TRUE Wilting Pressure of cell contents on cell wall FALSE TRUE Wilting Lower water concentration; Higher solute concentration Root hairs Xylem Lower water concentration; Higher solute concentration Root hairs Xylem

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20. Q. Name two substances that enter a human muscle cell by diffusion. Movement of molecules against a concentration gradient using energy Active transport Substances can be allowed or prevented in or out Movement of molecules against a concentration gradient using energy Substances can be allowed or prevented in or out Active transport Movement of molecules from area of high concentration to area of lower concentration Movement of molecules from area of high concentration to Allowing some substances to pass through Support Allowing some substances to pass through Support Movement of water along a concentration gradient through a selectively permeable membrane area of lower concentration Vacuole; Cell wall; Cell sap Bacteria lose water by osmosis, this leads to inactivity or death Movement of water along a concentration gradient through a selectively permeable membrane Vacuole; Cell wall; Cell sap Bacteria lose water by osmosis, this leads to inactivity or death No energy (ATP) required Chloroplast; Mitochondrion; Nucleus; Vacuole Visking tubing No energy (ATP) required Chloroplast; Mitochondrion; Nucleus; Vacuole Visking tubing Controlling the water/salt balance within an organism Osmosis Water movement between cells or from soil to root Controlling the water/salt balance within an organism Water movement between cells or from soil to root Osmosis Diffusion; Osmosis; Active transport Water; Sugar; Sap; Salt(s); Protein Oxygen; Glucose; Water; Amino acids; Phosphate; Iron Diffusion; Osmosis; Active transport Water; Sugar; Sap; Salt(s); Protein Oxygen; Glucose; Water; Amino acids; Phosphate; Iron Pressure of cell contents on cell wall FALSE TRUE Wilting Pressure of cell contents on cell wall FALSE TRUE Wilting Lower water concentration; Higher solute concentration Root hairs Xylem Lower water concentration; Higher solute concentration Root hairs Xylem

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22. Q. Suggest an advantage to the cell of having a selectively permeable membrane. Movement of molecules against a concentration gradient using energy Active transport Substances can be allowed or prevented in or out Movement of molecules against a concentration gradient using energy Substances can be allowed or prevented in or out Active transport Movement of molecules from area of high concentration to area of lower concentration Movement of molecules from area of high concentration to Allowing some substances to pass through Support Allowing some substances to pass through Support Movement of water along a concentration gradient through a selectively permeable membrane area of lower concentration Vacuole; Cell wall; Cell sap Bacteria lose water by osmosis, this leads to inactivity or death Movement of water along a concentration gradient through a selectively permeable membrane Vacuole; Cell wall; Cell sap Bacteria lose water by osmosis, this leads to inactivity or death No energy (ATP) required Chloroplast; Mitochondrion; Nucleus; Vacuole Visking tubing No energy (ATP) required Chloroplast; Mitochondrion; Nucleus; Vacuole Visking tubing Controlling the water/salt balance within an organism Osmosis Water movement between cells or from soil to root Controlling the water/salt balance within an organism Water movement between cells or from soil to root Osmosis Diffusion; Osmosis; Active transport Water; Sugar; Sap; Salt(s); Protein Oxygen; Glucose; Water; Amino acids; Phosphate; Iron Diffusion; Osmosis; Active transport Water; Sugar; Sap; Salt(s); Protein Oxygen; Glucose; Water; Amino acids; Phosphate; Iron Pressure of cell contents on cell wall FALSE TRUE Wilting Pressure of cell contents on cell wall FALSE TRUE Wilting Lower water concentration; Higher solute concentration Root hairs Xylem Lower water concentration; Higher solute concentration Root hairs Xylem

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24. Q. Explain the term turgor. Movement of molecules against a concentration gradient using energy Active transport Substances can be allowed or prevented in or out Movement of molecules against a concentration gradient using energy Substances can be allowed or prevented in or out Active transport Movement of molecules from area of high concentration to area of lower concentration Movement of molecules from area of high concentration to Allowing some substances to pass through Support Allowing some substances to pass through Support Movement of water along a concentration gradient through a selectively permeable membrane area of lower concentration Vacuole; Cell wall; Cell sap Bacteria lose water by osmosis, this leads to inactivity or death Movement of water along a concentration gradient through a selectively permeable membrane Vacuole; Cell wall; Cell sap Bacteria lose water by osmosis, this leads to inactivity or death No energy (ATP) required Chloroplast; Mitochondrion; Nucleus; Vacuole Visking tubing No energy (ATP) required Chloroplast; Mitochondrion; Nucleus; Vacuole Visking tubing Controlling the water/salt balance within an organism Osmosis Water movement between cells or from soil to root Controlling the water/salt balance within an organism Water movement between cells or from soil to root Osmosis Diffusion; Osmosis; Active transport Water; Sugar; Sap; Salt(s); Protein Oxygen; Glucose; Water; Amino acids; Phosphate; Iron Diffusion; Osmosis; Active transport Water; Sugar; Sap; Salt(s); Protein Oxygen; Glucose; Water; Amino acids; Phosphate; Iron Pressure of cell contents on cell wall FALSE TRUE Wilting Pressure of cell contents on cell wall FALSE TRUE Wilting Lower water concentration; Higher solute concentration Root hairs Xylem Lower water concentration; Higher solute concentration Root hairs Xylem

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26. Q. Give an example of osmosis in plants. Movement of molecules against a concentration gradient using energy Active transport Substances can be allowed or prevented in or out Movement of molecules against a concentration gradient using energy Substances can be allowed or prevented in or out Active transport Movement of molecules from area of high concentration to area of lower concentration Movement of molecules from area of high concentration to Allowing some substances to pass through Support Allowing some substances to pass through Support Movement of water along a concentration gradient through a selectively permeable membrane area of lower concentration Vacuole; Cell wall; Cell sap Bacteria lose water by osmosis, this leads to inactivity or death Movement of water along a concentration gradient through a selectively permeable membrane Vacuole; Cell wall; Cell sap Bacteria lose water by osmosis, this leads to inactivity or death No energy (ATP) required Chloroplast; Mitochondrion; Nucleus; Vacuole Visking tubing No energy (ATP) required Chloroplast; Mitochondrion; Nucleus; Vacuole Visking tubing Controlling the water/salt balance within an organism Osmosis Water movement between cells or from soil to root Controlling the water/salt balance within an organism Water movement between cells or from soil to root Osmosis Diffusion; Osmosis; Active transport Water; Sugar; Sap; Salt(s); Protein Oxygen; Glucose; Water; Amino acids; Phosphate; Iron Diffusion; Osmosis; Active transport Water; Sugar; Sap; Salt(s); Protein Oxygen; Glucose; Water; Amino acids; Phosphate; Iron Pressure of cell contents on cell wall FALSE TRUE Wilting Pressure of cell contents on cell wall FALSE TRUE Wilting Lower water concentration; Higher solute concentration Root hairs Xylem Lower water concentration; Higher solute concentration Root hairs Xylem

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28. Q. Name a substance found in a plant cell vacuole. Movement of molecules against a concentration gradient using energy Active transport Substances can be allowed or prevented in or out Movement of molecules against a concentration gradient using energy Substances can be allowed or prevented in or out Active transport Movement of molecules from area of high concentration to area of lower concentration Movement of molecules from area of high concentration to Allowing some substances to pass through Support Allowing some substances to pass through Support Movement of water along a concentration gradient through a selectively permeable membrane area of lower concentration Vacuole; Cell wall; Cell sap Bacteria lose water by osmosis, this leads to inactivity or death Movement of water along a concentration gradient through a selectively permeable membrane Vacuole; Cell wall; Cell sap Bacteria lose water by osmosis, this leads to inactivity or death No energy (ATP) required Chloroplast; Mitochondrion; Nucleus; Vacuole Visking tubing No energy (ATP) required Chloroplast; Mitochondrion; Nucleus; Vacuole Visking tubing Controlling the water/salt balance within an organism Osmosis Water movement between cells or from soil to root Controlling the water/salt balance within an organism Water movement between cells or from soil to root Osmosis Diffusion; Osmosis; Active transport Water; Sugar; Sap; Salt(s); Protein Oxygen; Glucose; Water; Amino acids; Phosphate; Iron Diffusion; Osmosis; Active transport Water; Sugar; Sap; Salt(s); Protein Oxygen; Glucose; Water; Amino acids; Phosphate; Iron Pressure of cell contents on cell wall FALSE TRUE Wilting Pressure of cell contents on cell wall FALSE TRUE Wilting Lower water concentration; Higher solute concentration Root hairs Xylem Lower water concentration; Higher solute concentration Root hairs Xylem

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30. Q. Give a feature of a plant cell that allows it to remain turgid for long periods. Movement of molecules against a concentration gradient using energy Active transport Substances can be allowed or prevented in or out Movement of molecules against a concentration gradient using energy Substances can be allowed or prevented in or out Active transport Movement of molecules from area of high concentration to area of lower concentration Movement of molecules from area of high concentration to Allowing some substances to pass through Support Allowing some substances to pass through Support Movement of water along a concentration gradient through a selectively permeable membrane area of lower concentration Vacuole; Cell wall; Cell sap Bacteria lose water by osmosis, this leads to inactivity or death Movement of water along a concentration gradient through a selectively permeable membrane Vacuole; Cell wall; Cell sap Bacteria lose water by osmosis, this leads to inactivity or death No energy (ATP) required Chloroplast; Mitochondrion; Nucleus; Vacuole Visking tubing No energy (ATP) required Chloroplast; Mitochondrion; Nucleus; Vacuole Visking tubing Controlling the water/salt balance within an organism Osmosis Water movement between cells or from soil to root Controlling the water/salt balance within an organism Water movement between cells or from soil to root Osmosis Diffusion; Osmosis; Active transport Water; Sugar; Sap; Salt(s); Protein Oxygen; Glucose; Water; Amino acids; Phosphate; Iron Diffusion; Osmosis; Active transport Water; Sugar; Sap; Salt(s); Protein Oxygen; Glucose; Water; Amino acids; Phosphate; Iron Pressure of cell contents on cell wall FALSE TRUE Wilting Pressure of cell contents on cell wall FALSE TRUE Wilting Lower water concentration; Higher solute concentration Root hairs Xylem Lower water concentration; Higher solute concentration Root hairs Xylem

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32. Q. True or False. Plant cell walls are fully permeable. Movement of molecules against a concentration gradient using energy Active transport Substances can be allowed or prevented in or out Movement of molecules against a concentration gradient using energy Substances can be allowed or prevented in or out Active transport Movement of molecules from area of high concentration to area of lower concentration Movement of molecules from area of high concentration to Allowing some substances to pass through Support Allowing some substances to pass through Support Movement of water along a concentration gradient through a selectively permeable membrane area of lower concentration Vacuole; Cell wall; Cell sap Bacteria lose water by osmosis, this leads to inactivity or death Movement of water along a concentration gradient through a selectively permeable membrane Vacuole; Cell wall; Cell sap Bacteria lose water by osmosis, this leads to inactivity or death No energy (ATP) required Chloroplast; Mitochondrion; Nucleus; Vacuole Visking tubing No energy (ATP) required Chloroplast; Mitochondrion; Nucleus; Vacuole Visking tubing Controlling the water/salt balance within an organism Osmosis Water movement between cells or from soil to root Controlling the water/salt balance within an organism Water movement between cells or from soil to root Osmosis Diffusion; Osmosis; Active transport Water; Sugar; Sap; Salt(s); Protein Oxygen; Glucose; Water; Amino acids; Phosphate; Iron Diffusion; Osmosis; Active transport Water; Sugar; Sap; Salt(s); Protein Oxygen; Glucose; Water; Amino acids; Phosphate; Iron Pressure of cell contents on cell wall FALSE TRUE Wilting Pressure of cell contents on cell wall FALSE TRUE Wilting Lower water concentration; Higher solute concentration Root hairs Xylem Lower water concentration; Higher solute concentration Root hairs Xylem

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34. Q. Water for photosynthesis enters the roots of plants by what process? Movement of molecules against a concentration gradient using energy Active transport Substances can be allowed or prevented in or out Movement of molecules against a concentration gradient using energy Substances can be allowed or prevented in or out Active transport Movement of molecules from area of high concentration to area of lower concentration Movement of molecules from area of high concentration to Allowing some substances to pass through Support Allowing some substances to pass through Support Movement of water along a concentration gradient through a selectively permeable membrane area of lower concentration Vacuole; Cell wall; Cell sap Bacteria lose water by osmosis, this leads to inactivity or death Movement of water along a concentration gradient through a selectively permeable membrane Vacuole; Cell wall; Cell sap Bacteria lose water by osmosis, this leads to inactivity or death No energy (ATP) required Chloroplast; Mitochondrion; Nucleus; Vacuole Visking tubing No energy (ATP) required Chloroplast; Mitochondrion; Nucleus; Vacuole Visking tubing Controlling the water/salt balance within an organism Osmosis Water movement between cells or from soil to root Controlling the water/salt balance within an organism Water movement between cells or from soil to root Osmosis Diffusion; Osmosis; Active transport Water; Sugar; Sap; Salt(s); Protein Oxygen; Glucose; Water; Amino acids; Phosphate; Iron Diffusion; Osmosis; Active transport Water; Sugar; Sap; Salt(s); Protein Oxygen; Glucose; Water; Amino acids; Phosphate; Iron Pressure of cell contents on cell wall FALSE TRUE Wilting Pressure of cell contents on cell wall FALSE TRUE Wilting Lower water concentration; Higher solute concentration Root hairs Xylem Lower water concentration; Higher solute concentration Root hairs Xylem

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36. Q. Suggest a way in which turgor is of value to plants. Movement of molecules against a concentration gradient using energy Active transport Substances can be allowed or prevented in or out Movement of molecules against a concentration gradient using energy Substances can be allowed or prevented in or out Active transport Movement of molecules from area of high concentration to area of lower concentration Movement of molecules from area of high concentration to Allowing some substances to pass through Support Allowing some substances to pass through Support Movement of water along a concentration gradient through a selectively permeable membrane area of lower concentration Vacuole; Cell wall; Cell sap Bacteria lose water by osmosis, this leads to inactivity or death Movement of water along a concentration gradient through a selectively permeable membrane Vacuole; Cell wall; Cell sap Bacteria lose water by osmosis, this leads to inactivity or death No energy (ATP) required Chloroplast; Mitochondrion; Nucleus; Vacuole Visking tubing No energy (ATP) required Chloroplast; Mitochondrion; Nucleus; Vacuole Visking tubing Controlling the water/salt balance within an organism Osmosis Water movement between cells or from soil to root Controlling the water/salt balance within an organism Water movement between cells or from soil to root Osmosis Diffusion; Osmosis; Active transport Water; Sugar; Sap; Salt(s); Protein Oxygen; Glucose; Water; Amino acids; Phosphate; Iron Diffusion; Osmosis; Active transport Water; Sugar; Sap; Salt(s); Protein Oxygen; Glucose; Water; Amino acids; Phosphate; Iron Pressure of cell contents on cell wall FALSE TRUE Wilting Pressure of cell contents on cell wall FALSE TRUE Wilting Lower water concentration; Higher solute concentration Root hairs Xylem Lower water concentration; Higher solute concentration Root hairs Xylem

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38. Q. Name the terms used in biology to describe the movement of substances through cell membranes. Movement of molecules against a concentration gradient using energy Active transport Substances can be allowed or prevented in or out Movement of molecules against a concentration gradient using energy Substances can be allowed or prevented in or out Active transport Movement of molecules from area of high concentration to area of lower concentration Movement of molecules from area of high concentration to Allowing some substances to pass through Support Allowing some substances to pass through Support Movement of water along a concentration gradient through a selectively permeable membrane area of lower concentration Vacuole; Cell wall; Cell sap Bacteria lose water by osmosis, this leads to inactivity or death Movement of water along a concentration gradient through a selectively permeable membrane Vacuole; Cell wall; Cell sap Bacteria lose water by osmosis, this leads to inactivity or death No energy (ATP) required Chloroplast; Mitochondrion; Nucleus; Vacuole Visking tubing No energy (ATP) required Chloroplast; Mitochondrion; Nucleus; Vacuole Visking tubing Controlling the water/salt balance within an organism Osmosis Water movement between cells or from soil to root Controlling the water/salt balance within an organism Water movement between cells or from soil to root Osmosis Diffusion; Osmosis; Active transport Water; Sugar; Sap; Salt(s); Protein Oxygen; Glucose; Water; Amino acids; Phosphate; Iron Diffusion; Osmosis; Active transport Water; Sugar; Sap; Salt(s); Protein Oxygen; Glucose; Water; Amino acids; Phosphate; Iron Pressure of cell contents on cell wall FALSE TRUE Wilting Pressure of cell contents on cell wall FALSE TRUE Wilting Lower water concentration; Higher solute concentration Root hairs Xylem Lower water concentration; Higher solute concentration Root hairs Xylem

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40. Q. What process is responsible for the uptake of minerals in a plant? Movement of molecules against a concentration gradient using energy Active transport Substances can be allowed or prevented in or out Movement of molecules against a concentration gradient using energy Substances can be allowed or prevented in or out Active transport Movement of molecules from area of high concentration to area of lower concentration Movement of molecules from area of high concentration to Allowing some substances to pass through Support Allowing some substances to pass through Support Movement of water along a concentration gradient through a selectively permeable membrane area of lower concentration Vacuole; Cell wall; Cell sap Bacteria lose water by osmosis, this leads to inactivity or death Movement of water along a concentration gradient through a selectively permeable membrane Vacuole; Cell wall; Cell sap Bacteria lose water by osmosis, this leads to inactivity or death No energy (ATP) required Chloroplast; Mitochondrion; Nucleus; Vacuole Visking tubing No energy (ATP) required Chloroplast; Mitochondrion; Nucleus; Vacuole Visking tubing Controlling the water/salt balance within an organism Osmosis Water movement between cells or from soil to root Controlling the water/salt balance within an organism Water movement between cells or from soil to root Osmosis Diffusion; Osmosis; Active transport Water; Sugar; Sap; Salt(s); Protein Oxygen; Glucose; Water; Amino acids; Phosphate; Iron Diffusion; Osmosis; Active transport Water; Sugar; Sap; Salt(s); Protein Oxygen; Glucose; Water; Amino acids; Phosphate; Iron Pressure of cell contents on cell wall FALSE TRUE Wilting Pressure of cell contents on cell wall FALSE TRUE Wilting Lower water concentration; Higher solute concentration Root hairs Xylem Lower water concentration; Higher solute concentration Root hairs Xylem

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42. Q. What is meant by osmoregulation? Movement of molecules against a concentration gradient using energy Active transport Substances can be allowed or prevented in or out Movement of molecules against a concentration gradient using energy Substances can be allowed or prevented in or out Active transport Movement of molecules from area of high concentration to area of lower concentration Movement of molecules from area of high concentration to Allowing some substances to pass through Support Allowing some substances to pass through Support Movement of water along a concentration gradient through a selectively permeable membrane area of lower concentration Vacuole; Cell wall; Cell sap Bacteria lose water by osmosis, this leads to inactivity or death Movement of water along a concentration gradient through a selectively permeable membrane Vacuole; Cell wall; Cell sap Bacteria lose water by osmosis, this leads to inactivity or death No energy (ATP) required Chloroplast; Mitochondrion; Nucleus; Vacuole Visking tubing No energy (ATP) required Chloroplast; Mitochondrion; Nucleus; Vacuole Visking tubing Controlling the water/salt balance within an organism Osmosis Water movement between cells or from soil to root Controlling the water/salt balance within an organism Water movement between cells or from soil to root Osmosis Diffusion; Osmosis; Active transport Water; Sugar; Sap; Salt(s); Protein Oxygen; Glucose; Water; Amino acids; Phosphate; Iron Diffusion; Osmosis; Active transport Water; Sugar; Sap; Salt(s); Protein Oxygen; Glucose; Water; Amino acids; Phosphate; Iron Pressure of cell contents on cell wall FALSE TRUE Wilting Pressure of cell contents on cell wall FALSE TRUE Wilting Lower water concentration; Higher solute concentration Root hairs Xylem Lower water concentration; Higher solute concentration Root hairs Xylem

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44. Q. Where precisely does water enter a plant? Movement of molecules against a concentration gradient using energy Active transport Substances can be allowed or prevented in or out Movement of molecules against a concentration gradient using energy Substances can be allowed or prevented in or out Active transport Movement of molecules from area of high concentration to area of lower concentration Movement of molecules from area of high concentration to Allowing some substances to pass through Support Allowing some substances to pass through Support Movement of water along a concentration gradient through a selectively permeable membrane area of lower concentration Vacuole; Cell wall; Cell sap Bacteria lose water by osmosis, this leads to inactivity or death Movement of water along a concentration gradient through a selectively permeable membrane Vacuole; Cell wall; Cell sap Bacteria lose water by osmosis, this leads to inactivity or death No energy (ATP) required Chloroplast; Mitochondrion; Nucleus; Vacuole Visking tubing No energy (ATP) required Chloroplast; Mitochondrion; Nucleus; Vacuole Visking tubing Controlling the water/salt balance within an organism Osmosis Water movement between cells or from soil to root Controlling the water/salt balance within an organism Water movement between cells or from soil to root Osmosis Diffusion; Osmosis; Active transport Water; Sugar; Sap; Salt(s); Protein Oxygen; Glucose; Water; Amino acids; Phosphate; Iron Diffusion; Osmosis; Active transport Water; Sugar; Sap; Salt(s); Protein Oxygen; Glucose; Water; Amino acids; Phosphate; Iron Pressure of cell contents on cell wall FALSE TRUE Wilting Pressure of cell contents on cell wall FALSE TRUE Wilting Lower water concentration; Higher solute concentration Root hairs Xylem Lower water concentration; Higher solute concentration Root hairs Xylem

45. CONGRATULATIONS Please CLICK on THIS BOX for the Next Question Please CLICK on THIS BOX for the Next Question

46. Q. The drooping of the leaves of a plant resulting from loss of turgidity due to lack of water is known as Movement of molecules against a concentration gradient using energy Active transport Substances can be allowed or prevented in or out Movement of molecules against a concentration gradient using energy Substances can be allowed or prevented in or out Active transport Movement of molecules from area of high concentration to area of lower concentration Movement of molecules from area of high concentration to Allowing some substances to pass through Support Allowing some substances to pass through Support Movement of water along a concentration gradient through a selectively permeable membrane area of lower concentration Vacuole; Cell wall; Cell sap Bacteria lose water by osmosis, this leads to inactivity or death Movement of water along a concentration gradient through a selectively permeable membrane Vacuole; Cell wall; Cell sap Bacteria lose water by osmosis, this leads to inactivity or death No energy (ATP) required Chloroplast; Mitochondrion; Nucleus; Vacuole Visking tubing No energy (ATP) required Chloroplast; Mitochondrion; Nucleus; Vacuole Visking tubing Controlling the water/salt balance within an organism Osmosis Water movement between cells or from soil to root Controlling the water/salt balance within an organism Water movement between cells or from soil to root Osmosis Diffusion; Osmosis; Active transport Water; Sugar; Sap; Salt(s); Protein Oxygen; Glucose; Water; Amino acids; Phosphate; Iron Diffusion; Osmosis; Active transport Water; Sugar; Sap; Salt(s); Protein Oxygen; Glucose; Water; Amino acids; Phosphate; Iron Pressure of cell contents on cell wall FALSE TRUE Wilting Pressure of cell contents on cell wall FALSE TRUE Wilting Lower water concentration; Higher solute concentration Root hairs Xylem Lower water concentration; Higher solute concentration Root hairs Xylem

47. CONGRATULATIONS Please CLICK on THIS BOX for the Next Question Please CLICK on THIS BOX for the Next Question

48. Q. In which tissue does water ascend through the plant? Movement of molecules against a concentration gradient using energy Active transport Substances can be allowed or prevented in or out Movement of molecules against a concentration gradient using energy Substances can be allowed or prevented in or out Active transport Movement of molecules from area of high concentration to area of lower concentration Movement of molecules from area of high concentration to Allowing some substances to pass through Support Allowing some substances to pass through Support Movement of water along a concentration gradient through a selectively permeable membrane area of lower concentration Vacuole; Cell wall; Cell sap Bacteria lose water by osmosis, this leads to inactivity or death Movement of water along a concentration gradient through a selectively permeable membrane Vacuole; Cell wall; Cell sap Bacteria lose water by osmosis, this leads to inactivity or death No energy (ATP) required Chloroplast; Mitochondrion; Nucleus; Vacuole Visking tubing No energy (ATP) required Chloroplast; Mitochondrion; Nucleus; Vacuole Visking tubing Controlling the water/salt balance within an organism Osmosis Water movement between cells or from soil to root Controlling the water/salt balance within an organism Water movement between cells or from soil to root Osmosis Diffusion; Osmosis; Active transport Water; Sugar; Sap; Salt(s); Protein Oxygen; Glucose; Water; Amino acids; Phosphate; Iron Diffusion; Osmosis; Active transport Water; Sugar; Sap; Salt(s); Protein Oxygen; Glucose; Water; Amino acids; Phosphate; Iron Pressure of cell contents on cell wall FALSE TRUE Wilting Pressure of cell contents on cell wall FALSE TRUE Wilting Lower water concentration; Higher solute concentration Root hairs Xylem Lower water concentration; Higher solute concentration Root hairs Xylem

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