Write a schematic representation of h.s.k pathway
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Answer:
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In this pathway, the CO2 is first added to phosphoenolpyruvate by the enzyme, PEP carboxylase, producing the four-carbon compound in mesophyll cells that is later transported to bundle sheath cells to liberate the CO2 for use in the Calvin cycle
Instead of the direct carbon fixation in the Calvin cycle like in C3 carbon fixation, the C4 pathway involves steps that first converts pyruvate to phosphoenolpyruvate (PEP) to bind with the CO2 forming a four-carbon compound (hence the name C4). As a result, the pathway is bypassed, and the wasteful loss of CO2 common in C3 carbon fixation pathway is .
Plants that first go through the C4 pathway are better adapted than plants that solely go through the C3 pathway under conditions of drought, high temperatures and low nitrogen or CO2 concentrations.
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Answer:
Hatch Sl-ack Kortshak pathway.
The HSK pathway is otherwise called the C4 pathway on the grounds that phosphoenolpyruvate (PEP) is a 3-carbon particle that acknowledges CO2 and it is fixed by the chemical, PEPcase (PEP Carboxylase) in the mesophyll cells.
- It shapes the "Four-carbon compound oxaloacetic corrosive (OAA)", and afterward other Four-carbon mixes like malic corrosive and aspartic corrosive.
- These mixes are moved to the group sheath cells.
- the four-carbon compound to shape as C3 mixes and discharge the carbon dioxide (discharged distinctly in the pack sheath cells, and enters the C3 cycle).
- The main result of this cycle is a 4-C intensify, this cycle is known as the C4 pathway.