The Hatch-Slack pathway, also known as C4 photosynthesis, involves the decarboxylation of a C4 acid and the regeneration of phosphoenolpyruvate.

1. Decarboxylation of C4 Acid: This process occurs in the bundle-sheath cells in the leaf. The C4 acid, typically malate or aspartate, is decarboxylated, or loses a carbon dioxide molecule, to become a C3 compound. This process is facilitated by the enzyme NADP-malic enzyme or NAD-malic enzyme, depending on the plant species. The released CO2 is then used in the Calvin cycle to produce sugars.

2. Regeneration of Phosphoenolpyruvate: This occurs in the mesophyll cells. The C3 compound, now a 3-carbon molecule, is converted back into phosphoenolpyruvate (PEP), a 3-carbon molecule, through a series of reactions. This process is facilitated by the enzyme pyruvate, phosphate dikinase. The regenerated PEP can then accept another CO2 molecule, and the cycle continues.

So, to answer your question, the decarboxylation of C4 acid occurs in the bundle-sheath cells, and the regeneration of phosphoenolpyruvate occurs in the mesophyll cells.

Question

The Hatch-Slack pathway, also known as C4 photosynthesis, involves the decarboxylation of a C4 acid and the regeneration of phosphoenolpyruvate.

1. Decarboxylation of C4 Acid: This process occurs in the bundle-sheath cells in the leaf. The C4 acid, typically malate or aspartate, is decarboxylated, or loses a carbon dioxide molecule, to become a C3 compound. This process is facilitated by the enzyme NADP-malic enzyme or NAD-malic enzyme, depending on the plant species. The released CO2 is then used in the Calvin cycle to produce sugars.

2. Regeneration of Phosphoenolpyruvate: This occurs in the mesophyll cells. The C3 compound, now a 3-carbon molecule, is converted back into phosphoenolpyruvate (PEP), a 3-carbon molecule, through a series of reactions. This process is facilitated by the enzyme pyruvate, phosphate dikinase. The regenerated PEP can then accept another CO2 molecule, and the cycle continues.

So, to answer your question, the decarboxylation of C4 acid occurs in the bundle-sheath cells, and the regeneration of phosphoenolpyruvate occurs in the mesophyll cells.

Knowee AI · Accepted Answer

The Hatch-Slack pathway, also known as C4 photosynthesis, involves the decarboxylation of a C4 acid and the regeneration of phosphoenolpyruvate.

1. Decarboxylation of C4 Acid: This process occurs in the bundle-sheath cells in the leaf. The C4 acid, typically malate or aspartate, is decarboxylated, or loses a carbon dioxide molecule, to become a C3 compound. This process is facilitated by the enzyme NADP-malic enzyme or NAD-malic enzyme, depending on the plant species. The released CO2 is then used in the Calvin cycle to produce sugars.

2. Regeneration of Phosphoenolpyruvate: This occurs in the mesophyll cells. The C3 compound, now a 3-carbon molecule, is converted back into phosphoenolpyruvate (PEP), a 3-carbon molecule, through a series of reactions. This process is facilitated by the enzyme pyruvate, phosphate dikinase. The regenerated PEP can then accept another CO2 molecule, and the cycle continues.

So, to answer your question, the decarboxylation of C4 acid occurs in the bundle-sheath cells, and the regeneration of phosphoenolpyruvate occurs in the mesophyll cells.

In Hatch & Slack pathway decarboxylation of C4 acid and regeneration of phosophoenol pyruvate occurs respectively in :-

Question

In Hatch & Slack pathway decarboxylation of C4 acid and regeneration of phosphoenol pyruvate occurs respectively in :-

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