Photosynthesis and the Calvin Cycle

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What is photosynthesis?

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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, and releasing oxygen as a byproduct.

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What are the two main stages of photosynthesis?

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The two main stages of photosynthesis are the light-dependent reactions and the light-independent reactions (Calvin Cycle).

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What occurs during the light-dependent reactions?

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During the light-dependent reactions, light energy is captured by chlorophyll and used to produce ATP and NADPH, while splitting water molecules to release oxygen.

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What is the Calvin Cycle?

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The Calvin Cycle is a series of biochemical reactions that occur in the stroma of chloroplasts, where carbon dioxide is fixed into organic molecules, ultimately producing glucose.

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What is RuBP and its role in the Calvin Cycle?

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Ribulose bisphosphate (RuBP) is a 5-carbon sugar that combines with carbon dioxide to initiate the Calvin Cycle, allowing for the fixation of carbon.

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What is G3P and its significance in photosynthesis?

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Glyceraldehyde 3-phosphate (G3P) is a 3-carbon sugar produced in the Calvin Cycle, which can be converted into glucose and other carbohydrates.

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How do stomata function in photosynthesis?

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Stomata are tiny pores on the surface of leaves that allow for the exchange of gases; they enable carbon dioxide to enter and oxygen to exit the plant.

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What is the role of xylem in plants?

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Xylem is a type of vascular tissue that conducts water and dissolved minerals from the roots to the rest of the plant.

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What is the importance of chlorophyll in photosynthesis?

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Chlorophyll is the green pigment in plants that absorbs light energy, primarily from the sun, which is essential for the light-dependent reactions of photosynthesis.

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What is the byproduct of photosynthesis?

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The byproduct of photosynthesis is oxygen, which is released into the atmosphere during the light-dependent reactions.