12.4 Photosynthesis

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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.

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What are the main products of photosynthesis?

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The main products of photosynthesis are glucose (C6H12O6) and oxygen (O2).

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What is the role of chlorophyll in photosynthesis?

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Chlorophyll is a green pigment found in chloroplasts that absorbs light energy, primarily from the sun, which is essential for the photosynthesis process.

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What is the equation for photosynthesis?

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The overall equation for photosynthesis is @@6 ext{CO}_2 + 6 ext{H}_2 ext{O} + ext{light energy} ightarrow ext{C}_6 ext{H}_{12} ext{O}_6 + 6 ext{O}_2@@.

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What factors affect the rate of photosynthesis?

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The rate of photosynthesis is affected by light intensity, temperature, and carbon dioxide concentration. Soil type does not directly affect it.

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What gas do plants absorb during photosynthesis?

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Plants absorb carbon dioxide (CO2) during photosynthesis.

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What is the source of oxygen released during photosynthesis?

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The oxygen released during photosynthesis comes from the splitting of water (H2O) molecules.

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What is the Calvin cycle?

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The Calvin cycle is the second stage of photosynthesis where carbon dioxide is fixed into glucose using ATP and NADPH produced in the light-dependent reactions.

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What are light-dependent reactions?

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Light-dependent reactions are the first stage of photosynthesis that occur in the thylakoid membranes, where light energy is converted into chemical energy (ATP and NADPH).

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What is the significance of photosynthesis?

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Photosynthesis is crucial for life on Earth as it provides oxygen for respiration and is the foundation of the food chain.