AP Bio Insta-Review Topic 3.5: Photosynthesis

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What is photosynthesis?

Back

Photosynthesis is the process by which green plants, algae, and some bacteria convert light energy into chemical energy in the form of glucose, using carbon dioxide and water.

Front

What are the two main stages of photosynthesis?

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The two main stages of photosynthesis are the Light Reactions and the Calvin Cycle.

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Where do the Light Reactions of photosynthesis occur?

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The Light Reactions occur in the thylakoid membranes of chloroplasts.

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What is produced during the Light Reactions?

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The Light Reactions produce ATP, NADPH, and oxygen.

Front

What is the role of chlorophyll in photosynthesis?

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Chlorophyll is a pigment that absorbs light energy, primarily in the blue and red wavelengths, and is essential for the Light Reactions.

Front

What is the Calvin Cycle?

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The Calvin Cycle is the set of chemical reactions that take place in the stroma of chloroplasts, where carbon dioxide is fixed into glucose using ATP and NADPH produced in the Light Reactions.

Front

What is the primary function of the electron transport chain in photosynthesis?

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The primary function of the electron transport chain is to transfer electrons from water to NADP+, creating NADPH and generating a proton gradient that produces ATP.

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What is the significance of oxygen production in photosynthesis?

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Oxygen produced during photosynthesis is a byproduct that is released into the atmosphere, which is essential for the survival of aerobic organisms.

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What is the role of water in photosynthesis?

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Water provides electrons and protons for the Light Reactions and is split to release oxygen.

Front

How does carbon dioxide enter the plant for photosynthesis?

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Carbon dioxide enters the plant through small openings called stomata, located on the leaves.