The incorrect statement for photosynthesis is

Correct answer: D. It uses oxygen

  • A. It occurs during daytime
  • B. It uses water with CO2
  • C. It requires chlorophyll
  • D. It uses oxygen

Explanation

The statement "photosynthesis uses oxygen" is incorrect because, in reality, photosynthesis produces oxygen rather than consuming it. During this process, green plants, algae, and some bacteria use sunlight to convert carbon dioxide and water into glucose, releasing oxygen as a byproduct. Oxygen is generated when water molecules are split in the light-dependent reactions, and it is essential for aerobic respiration but not for photosynthesis itself. Therefore, claiming that photosynthesis uses oxygen reverses the actual role of oxygen in this vital biological process.

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Cellular respiration explains how cells release energy from glucose through glycolysis, the link reaction, Krebs cycle and electron transport chain. It includes ATP production, substrate-level and oxidative phosphorylation, aerobic versus anaerobic respiration, and the roles of mitochondria, oxygen and fermentation in energy transfer.

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