How many additional ATP molecules are require | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(C) In the $C_3$ pathway (Calvin cycle),the fixation of one molecule of $CO_2$ requires $3$ $ATP$ and $2$ $NADPH$ molecules.In the $C_4$ pathway,there

Vedclass · Accepted Answer

$2$

Vedclass · Answer

(C) In the $C_3$ pathway (Calvin cycle),the fixation of one molecule of $CO_2$ requires $3$ $ATP$ and $2$ $NADPH$ molecules.In the $C_4$ pathway,there is an additional step of $CO_2$ fixation by $PEP$ carboxylase and the regeneration of $PEP$ (Phosphoenolpyruvate) from pyruvate,which consumes $2$ additional $ATP$ molecules.Therefore,the $C_4$ pathway requires a total of $5$ $ATP$ ($3$ for the Calvin cycle + $2$ for $PEP$ regeneration) per $CO_2$ molecule fixed.The difference in $ATP$ requirement is $5 - 3 = 2$ $ATP$ molecules.

How many additional $ATP$ molecules are required in the $C_4$ pathway compared to the $C_3$ pathway for the fixation of one molecule of $CO_2$?

Similar Questions

Tropical plants like sugarcane have a very high capacity for $CO_2$ fixation due to:

In $C_4$ plants,$CO_2$ is fixed by $RuBP$ in which of the following?

Which was the first stable product in the light-dependent reaction of $C_4$ plants?

Which of the following statements is false regarding Kranz anatomy?

Bundle sheath cells:

Vedclass Test Series

Exam Paper Generator

Online Exam Module