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Sugars are created duringGroup of answer choicesthe light reactions of photosynthesisanaerobic respirationthe Calvin cycle of photosynthesisaerobic respiration

Question

Sugars are created during

  • Group of answer choices:
    • the light reactions of photosynthesis
    • anaerobic respiration
    • the Calvin cycle of photosynthesis
    • aerobic respiration
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Solution

Sugars are created during the Calvin cycle of photosynthesis.

Here's a step-by-step explanation:

  1. Photosynthesis is the process by which green plants, algae, and some bacteria use sunlight to synthesize foods with the help of chlorophyll pigments. It involves two stages: the light-dependent reactions and the light-independent reactions (Calvin cycle).

  2. The light-dependent reactions occur in the thylakoid membranes of the chloroplasts where light energy is converted into chemical energy, producing ATP and NADPH.

  3. The ATP and NADPH produced in the light-dependent reactions are then used in the Calvin cycle to produce sugar (glucose).

  4. The Calvin cycle, also known as the light-independent reactions or dark reactions, occurs in the stroma of the chloroplasts. It doesn't directly need light to occur, but it relies on the energy carriers (ATP and NADPH) produced in the light reactions.

  5. In the Calvin cycle, carbon dioxide is "fixed" into an organic molecule through a process called carbon fixation. This molecule is then reduced to a carbohydrate (sugar) using the ATP and NADPH.

  6. Therefore, sugars are created during the Calvin cycle of photosynthesis.

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