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RuBisCo occurs in high quantity as it is...

RuBisCo occurs in high quantity as it is

A

An oxygenase

B

Catalysing reversible reaction

C

Degraded rapidly

D

Very slow acting enzyme.

Text Solution

AI Generated Solution

The correct Answer is:
**Step-by-Step Solution:** 1. **Understanding RuBisCo**: RuBisCo stands for ribulose-1,5-bisphosphate carboxylase/oxygenase. It is a crucial enzyme in the process of photosynthesis, specifically in the Calvin cycle (dark reactions). 2. **Analyzing the Options**: - **Option A**: "It occurs in high quantity because it is an oxygenase." - This is incorrect because RuBisCo has both carboxylase and oxygenase activities. It is not solely an oxygenase. - **Option B**: "It catalyzes a reversible reaction." - This is also incorrect. The reactions catalyzed by RuBisCo are generally irreversible. - **Option C**: "It degrades rapidly." - This is incorrect as well. RuBisCo is a stable enzyme and does not degrade rapidly. - **Option D**: "It is a very slow acting enzyme." - This is correct. RuBisCo is known to be a slow enzyme, which means that plants need to produce it in large quantities to ensure sufficient rates of photosynthesis. 3. **Conclusion**: The correct answer is that RuBisCo occurs in high quantity because it is a very slow-acting enzyme (Option D). ---
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