Question:
In C4 pathway, the CO2 fixation in mesophyll cells is carried out by the enzyme .........
In C4 pathway, the CO2 fixation in mesophyll cells is carried out by the enzyme .........
Updated On: Apr 16, 2024
- PEP carboxylase
- Rubisco
- Pyruvate dehydrogenase
- Pyruvate decarboxylase
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The Correct Option is A
Solution and Explanation
In $C_{4}$ pathway, the primary $CO_{2}$ acceptor is a $3$-carbon molecule phosphoenol pyruvate $(PEP)$ and is present in the mesophyll cells. The enzyme responsible for this fixation is $PEP$ carboxylase or $PEP$ case
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Concepts Used:
Photosynthesis in Higher Plants
Processes Of Photosynthesis in Higher Plants:
Photosynthesis in higher plants involves the following processes:
- Light Reaction
- Dark Reaction
Light Reaction:
- This phenomenon occurs in the presence of light.
- The pigment absorbs light and produces energy in the form of ATP.
- The process involves- absorption of light, water splitting, the release of oxygen, and formation of ATP and NADPH.
Dark Reaction:
This process occurs in the absence of light in the stroma of the chloroplasts. The following cycles are involved in the process:
- Calvin Cycle (C3 Cycle)
- C4 Cycle (Hatch and Slack Pathway)