Given below are two statements:
Statement I: RuBisCO is the most abundant enzyme in the world.
Statement II: P

Question

Given below are two statements:
Statement I: RuBisCO is the most abundant enzyme in the world.
Statement II: Photorespiration does not occur in C4 plants.
In the light of the above statements, choose the most appropriate answer from the options given below:

Accepted Answer

According to the text:
- Statement I is Correct: RuBisCO (Ribulose bisphosphate Carboxylase-Oxygenase) is explicitly stated to be the most abundant enzyme in the world (Source 103) and the most abundant protein in the whole of the biosphere (Source 67).
- Statement II is Correct: The text states that in C4 plants photorespiration does not occur (Source 105). This is because they have a mechanism (C4 pathway) that increases the intracellular concentration of CO2 at the enzyme site, ensuring RuBisCO functions as a carboxylase rather than an oxygenase.

Step-by-Step Solution

Practice All BIOLOGY Questions