Which of the following is TRUE concerning the C4 pathway?
A) It produces large amounts of carbohydrates.
B) It feeds into the C3 pathway.
C) It is the mechanism of photorespiration.
D) It involves the activity of rubisco.
E) All of these are true.

Question

Quizplus · Accepted Answer

The C4 pathway feeds into the C3 pathway by transferring its fixed carbon to the mesophyll cells, where it is converted to a C3 molecule and enters the Calvin cycle. The C4 pathway does not produce significantly larger amounts of carbohydrates compared to the C3 pathway and is not the mechanism of photorespiration. The C4 pathway involves the activity of PEP carboxylase, not rubisco.

Which of the Following Is TRUE Concerning the C4 Pathway