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Questions and Answers
What is a producer? Why are plants called producers?
What is a producer? Why are plants called producers?
A producer is a green plant, they can survive without animals and make organic chemicals.
What is the definition of photosynthesis?
What is the definition of photosynthesis?
Photosynthesis is the process by which plants make food by using sunlight.
Where does the carbon for photosynthesis come from?
Where does the carbon for photosynthesis come from?
All carbon comes from carbon dioxide.
What do plants do with extra glucose?
What do plants do with extra glucose?
What does photosynthesis require?
What does photosynthesis require?
What does photosynthesis produce?
What does photosynthesis produce?
What is the equation for photosynthesis?
What is the equation for photosynthesis?
How does the plant get the necessary reactants (molecules) to make sugar?
How does the plant get the necessary reactants (molecules) to make sugar?
Where in a plant does photosynthesis happen?
Where in a plant does photosynthesis happen?
Specifically in which organelle does photosynthesis happen?
Specifically in which organelle does photosynthesis happen?
What is a granum?
What is a granum?
Where are the granum and thylakoids found?
Where are the granum and thylakoids found?
What are the two very important things that we get out of photosynthesis?
What are the two very important things that we get out of photosynthesis?
How does the earth get all of its energy?
How does the earth get all of its energy?
What is the difference between an autotroph and a heterotroph?
What is the difference between an autotroph and a heterotroph?
Why do leaves change color?
Why do leaves change color?
What does this say about their ability to carry out photosynthesis?
What does this say about their ability to carry out photosynthesis?
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Study Notes
Producers
- Producers are green plants that synthesize food independently.
- They generate organic chemicals without relying on animals.
Photosynthesis
- Defined as the process by which plants create food using sunlight.
- Requires reactants: carbon dioxide, water, light energy, and chlorophyll.
Carbon Source
- The source of carbon for photosynthesis is carbon dioxide from the atmosphere.
Glucose Utilization
- Excess glucose produced by plants is converted into starch for storage.
Photosynthesis Products
- The byproducts of photosynthesis include glucose, oxygen, and waste energy.
Photosynthesis Equation
- The chemical equation for photosynthesis: 6CO2 + 6H2O + light energy → C6H12O6 + 6O2.
Reactant Acquisition
- Plants obtain necessary reactants from the air (carbon dioxide) and the environment (water).
Site of Photosynthesis
- Photosynthesis occurs in chloroplasts, which contain the necessary structures for the process.
Organelle for Photosynthesis
- Photosynthesis specifically takes place in the granum, which is a part of the chloroplast.
Granum Definition
- A granum is a stack of thylakoids, essential for the light-dependent reactions of photosynthesis.
Location of Granum and Thylakoids
- Both granum and thylakoids are located within chloroplasts.
Main Outputs of Photosynthesis
- The two vital products of photosynthesis are glucose, used for energy, and oxygen, released into the atmosphere.
Earth's Energy Source
- The primary source of energy for the Earth comes from the sun.
Autotroph vs. Heterotroph
- Autotrophs, like plants, produce their own food, whereas heterotrophs rely on consuming other organisms for nourishment.
Leaf Color Change
- Leaves change color in autumn due to the breakdown of chlorophyll, which diminishes green pigmentation.
Photosynthesis and Chlorophyll
- When chlorophyll breaks down, a plant's ability to perform photosynthesis is significantly hindered.
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