Practice Quiz

Praxis II: Biology Content Knowledge Exam Prep

Category - Biology

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Which of the following is a byproduct of photosynthesis?
  1. Water
  2. Carbon monoxide
  3. Oxygen
  4. Nitrogen
  5. Carbon monoxide
Explanation
Answer: C, Oxygen. Oxygen is released as a byproduct of photosynthesis in plants.

Key Takeaway: Photosynthesis is a process that converts carbon dioxide and water into organic compounds such as sugars using sunlight as energy. Oxygen is released as a byproduct of this process, in the same way that carbon dioxide is released by humans as a byproduct of aerobic respiration. Nitrogen and carbon monoxide are not involved in either process.
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