Peroxisomes
Peroxisomes are involved in which metabolic process in plant cells?
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About This Question
- Subject
- biology
- Chapter
- cell structure and function
- Topic
- peroxisomes
- Difficulty
- Hard
- Year
- 2025
Solution
Correct Answer:
Photorespiration glycolate oxidation
- Photorespiration (C2 Cycle): This process occurs in C3 plants under high O2 conditions, involving Chloroplasts, Peroxisomes, and Mitochondria.
- Peroxisome Role: In the peroxisome, glycolate (imported from chloroplasts) is oxidized by glycolate oxidase to form glyoxylate and Hydrogen Peroxide (H2O2).
- Detoxification: Peroxisomes contain the enzyme catalase, which immediately breaks down the poisonous H2O2 into water and oxygen.
- Significance: This is a classic example of three-organelle cooperation in plant metabolism.
This hard difficulty biology question is from the chapter cell structure and function, covering the topic of peroxisomes. It appeared in the 2025 exam.
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