Cell Cycle and Mitosis
The cell cycle and mitosis play crucial roles in cell reproduction and maintaining chromosome number. Events like interphase, prophase, metaphase, anaphase, telophase, and cytokinesis are vital stages. Mitosis ensures the formation of new cells with identical chromosome numbers, essential for processes like growth, healing, and proper body function. Any disruption in mitosis can lead to issues such as cancer.
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Presentation Transcript
SC.912.L.16.14 Describe the cell cycle, including the process of mitosis. Explain the role of mitosis in the formation of new cells and its importance in maintaining chromosome number during asexual reproduction. Clarifications: Students will describe specific events occurring in each of the stages of the cell cycle and/or phases of mitosis. Students will explain how mitosis forms new cells and its role in maintaining chromosome number during asexual reproduction.
Key Topic Mitosis The FRAME Routine is about Step Description Interphase Prophase Metaphase Anaphase Telophase Cytokinesis So What? (What s important to know about this?) 2
Extend Understanding Directions: Label the diagram below by drawing a line to the structure within the cell and label using the letters in the key below. Some terms will be used multiple times. See the example below. Key: A = DNA, B = nucleus, C = centriole, D = chromosomes, E = spindle fibers, F = chromatids, G = nuclear membrane A 3
Key Topic The FRAME Routine Mitosis is about how cells in our body go through reproduction to make new cells that are exactly like the old cells. Step Description 1 Cell gets ready to start dividing, DNA makes a copy of itself so there is enough for the 2 new cells that will be created when the old cell divides Interphase Strands of DNA called chromatin compact or coil up to form chromosomes Membrane around the nucleus dissolves 2 Prophase 3 Chromosomes line up in the middle of the cell Metaphase Chromosomes are pulled apart into individual chromatids Sister chromatids (halves of the same chromosome) are pulled to opposite ends of the cell 4 Anaphase Membrane s forms around each group of chromatids making 2 nucleii Chromosomes unwind into chromatin 5 Telophase So What? (What s important to know about this?) Our body s cell have to go through mitosis for our hair and nails to grow, for cuts in our skin to heal, and for our body to work properly. If something goes wrong in mitosis, it can lead to problems like cancer.
