Photosynthesis: The Process and Importance
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Photosynthesis
Photosynthesis
is
is
the process by
the process by
which plants
which plants
produce their food
produce their food
in the presence of
in the presence of
sunlight, water,
sunlight, water,
carbon dioxide, and
carbon dioxide, and
chlorophyll.
chlorophyll.
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Plant cells convert the light
energy from the sun into
chemical energy in the form of
ATP.
The chloroplasts use the
chemical energy stored in the
ATP to form Glucose.
This glucose is then distributed
throughout the plant as food.
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Plants, algae, and many
Plants, algae, and many
single-celled
single-celled
organisms
organisms
(bacteria)
(bacteria)
carry out
carry out
photosynthesis
photosynthesis
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Where does the energy that
sustains all life come from?
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!
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Photosynthesis is the
connection between energy that
is released from the
sun
(solar
energy) and the energy
available for
living organisms
(chemical energy).
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Carbon dioxide
Carbon dioxide
gas, sunlight and
gas, sunlight and
water
water
are used
are used
during
during
photosynthesis
photosynthesis
All of these come
All of these come
from the
from the
environment
environment
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Plants get carbon dioxide from the
Plants get carbon dioxide from the
atmosphere. The carbon dioxide is
atmosphere. The carbon dioxide is
absorbed through
absorbed through
stomata
stomata
.
.
Stomata are tiny holes or pores found in the
Stomata are tiny holes or pores found in the
leaves of plants.
leaves of plants.
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Stomata help the leaves by absorbing
carbon dioxide from the air.
Stomata also allow oxygen produced
during photosynthesis to escape into the
atmosphere.
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Six molecules of carbon dioxide react with
six molecules of water to form 1 molecule of
glucose and six molecules of oxygen.
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During photosynthesis
During photosynthesis
water
water
and
and
carbon dioxide
carbon dioxide
from the
from the
environment are combined to make
environment are combined to make
an organic compound, called
an organic compound, called
glucose.
glucose.
Glucose is a simple
Glucose is a simple
carbohydrate or a simple sugar.
carbohydrate or a simple sugar.
Oxygen
Oxygen
gas is also formed during
gas is also formed during
photosynthesis. The oxygen that is
photosynthesis. The oxygen that is
produced is released into the
produced is released into the
environment.
environment.
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Photosynthesis occurs in
Photosynthesis occurs in
plant cells
plant cells
when
when
light
light
is
is
available. Generally this is
available. Generally this is
during the day time.
during the day time.
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Photosynthesis
Photosynthesis
occurs in the
occurs in the
chloroplasts
chloroplasts
of
of
plant cells when
plant cells when
they are exposed
they are exposed
to light
to light
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Chloroplasts
Chloroplasts
are green
are green
colored organelles that
colored organelles that
contain chlorophyll.
contain chlorophyll.
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Photosythesis helps plants produce their
own food
Plants are the first step in the food chain.
We cannot make our own food (glucose,
energy), we must get our food from
plants.
The oxygen released during
photosynthesis is necessary for all living
things.
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The release of chemical energy for use by
cells. It’s the plants way of eating
(consuming) the glucose.
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Once the energy that was in sunlight is
Once the energy that was in sunlight is
changed into chemical energy by
changed into chemical energy by
photosynthesis
photosynthesis
, an organism has to
, an organism has to
transform the chemical energy into a a
transform the chemical energy into a a
form that can be used by the organism.
form that can be used by the organism.
This process is
This process is
cellular respiration
cellular respiration
.
.
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The breakdown of glucose molecules to
release energy
Takes place in all living things
Is a step by step process
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The energy stored in
The energy stored in
glucose
glucose
during photosynthesis is
during photosynthesis is
transferred to the chemical
transferred to the chemical
bonds of
bonds of
ATP
ATP
All cells
All cells
“run” on the energy
“run” on the energy
released from ATP
released from ATP
Photosynthesis is a vital process where plants convert sunlight, water, and carbon dioxide into energy for growth. Plants, algae, and some bacteria carry out photosynthesis, utilizing chlorophyll to produce glucose, the primary source of energy for plants. The sun provides the energy essential for sustaining life through this process, highlighting the crucial role of photosynthesis in the ecosystem.
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Presentation Transcript
Photosynthesis Photosynthesis Photosynthesis is the process by which plants produce their food in the presence of sunlight, water, carbon dioxide, and chlorophyll.
What happens during What happens during Photosynthesis? Photosynthesis? Plant cells convert the light energy from the sun into chemical energy in the form of ATP. The chloroplasts use the chemical energy stored in the ATP to form Glucose. This glucose is then distributed throughout the plant as food.
WHO carries out WHO carries out Photosynthesis? Photosynthesis? Plants, algae, and many single-celled organisms (bacteria) carry out photosynthesis
Energy Energy Where does the energy that sustains all life come from? The Sun!! Photosynthesis is the connection between energy that is released from the sun (solar energy) and the energy available for living organisms (chemical energy).
Materials Used Materials Used Carbon dioxide gas, sunlight and water are used during photosynthesis All of these come from the environment
How do plants get carbon How do plants get carbon dioxide? dioxide? Plants get carbon dioxide from the atmosphere. The carbon dioxide is absorbed through stomata. Stomata are tiny holes or pores found in the leaves of plants.
What is the function of What is the function of the stomata? the stomata? Stomata help the leaves by absorbing carbon dioxide from the air. Stomata also allow oxygen produced during photosynthesis to escape into the atmosphere.
What is the equation for the What is the equation for the chemical reaction of chemical reaction of photosynthesis? photosynthesis?
What is the equation for the What is the equation for the chemical reaction of chemical reaction of photosynthesis? photosynthesis? Six molecules of carbon dioxide react with six molecules of water to form 1 molecule of glucose and six molecules of oxygen.
Materials Produced: Materials Produced: During photosynthesis water and carbon dioxide from the environment are combined to make an organic compound, called glucose. Glucose is a simple carbohydrate or a simple sugar. Oxygen gas is also formed during photosynthesis. The oxygen that is produced is released into the environment.
WHEN does WHEN does Photosynthesis occur? Photosynthesis occur? Photosynthesis occurs in plant cells when light is available. Generally this is during the day time.
WHERE does WHERE does Photosynthesis occur? Photosynthesis occur? Photosynthesis occurs in the chloroplasts of plant cells when they are exposed to light
What are chloroplasts? What are chloroplasts? Chloroplasts are green colored organelles that contain chlorophyll.
WHY is Photosynthesis WHY is Photosynthesis important? important? Photosythesis helps plants produce their own food Plants are the first step in the food chain. We cannot make our own food (glucose, energy), we must get our food from plants. The oxygen released during photosynthesis is necessary for all living things.
Cellular Respiration Cellular Respiration
What is Cellular What is Cellular Respiration? Respiration? The release of chemical energy for use by cells. It s the plants way of eating (consuming) the glucose.
What is Cellular What is Cellular Respiration? Respiration? Once the energy that was in sunlight is changed into chemical energy by photosynthesis, an organism has to transform the chemical energy into a a form that can be used by the organism. This process is cellular respiration.
Describe Cellular Describe Cellular Respiration Respiration The breakdown of glucose molecules to release energy Takes place in all living things Is a step by step process
What is the chemical What is the chemical equation for cellular equation for cellular respiration? respiration?
Relationship between Relationship between Photosynthesis and Respiration Photosynthesis and Respiration The energy stored in glucose during photosynthesis is transferred to the chemical bonds of ATP All cells run on the energy released from ATP
