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Introduction to Photosynthesis
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What is photosynthesis?
Photosynthesis is the process by which green plants and some other organisms use sunlight to synthesize nutrients from carbon dioxide and water.
Where in a plant does photosynthesis occur?
Photosynthesis primarily occurs in the chloroplasts, which are found in the cells of plant leaves.
What are the two main stages of photosynthesis?
The two main stages of photosynthesis are the light-dependent reactions and the Calvin cycle (light-independent reactions).
What is the primary pigment involved in photosynthesis?
The primary pigment involved in photosynthesis is chlorophyll.
Why are leaves green?
Leaves appear green because chlorophyll absorbs light in the red and blue regions of the visible light spectrum and reflects green light.
What is the main purpose of photosynthesis?
The main purpose of photosynthesis is to convert solar energy into chemical energy and store it in the bonds of glucose.
Which gas is used in photosynthesis?
Carbon dioxide (CO2) is used in photosynthesis.
Which gas is released during photosynthesis?
Oxygen (O2) is released during photosynthesis.
What role does water play in photosynthesis?
Water provides electrons and hydrogen ions during the light-dependent reactions and is a source of oxygen as a byproduct.
How does sunlight affect photosynthesis?
Sunlight provides the energy necessary for the light-dependent reactions to produce ATP and NADPH, which are used in the Calvin cycle.
What is the chemical formula for glucose, the end-product of photosynthesis?
The chemical formula for glucose is C6H12O6.
How is ATP used in photosynthesis?
ATP provides energy for the Calvin cycle, where carbon dioxide is fixed into glucose.
How are NADPH and ATP similar in their role during photosynthesis?
Both NADPH and ATP are energy carriers that provide the necessary energy and electrons for the synthesis of glucose in the Calvin cycle.
Why is photosynthesis essential for life on Earth?
Photosynthesis is essential because it produces oxygen and organic compounds, which are vital for most life forms on Earth.
How do stomata function in the process of photosynthesis?
Stomata are openings on the leaf surface that allow gas exchange; they let carbon dioxide in and oxygen out during photosynthesis.
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