Question

What is true of stage 2 of photosynthesis?

a) It generates a proton gradient across the thylakoid membrane.
b) It produces glyceraldehyde 3-phosphate in the stroma.
c) It produces all of the O2 we breathe.
d) It begins with the production of ATP and NADPH and ends with their consumption.
e) It takes place in the chloroplast grana.

Answer 1

The correct answer to what is true of stage 2 of photosynthesis is that it produces glyceraldehyde 3-phosphate (GA3P) in the stroma during the Calvin cycle.

Step-by-step explanation:

Stage 2 of photosynthesis refers to the Calvin cycle, which is part of the photosynthetic process. The correct answer to the question is (b) It produces glyceraldehyde 3-phosphate (GA3P) in the stroma. In the Calvin cycle, energy derived from ATP and NADPH, which are produced in the light-dependent reactions, is used to convert carbon dioxide (CO2) into GA3P. This process does not generate a proton gradient, produce all the oxygen we breathe, nor does it begin with the production of ATP and NADPH; rather, it consumes them. Additionally, the Calvin cycle does not take place in the chloroplast grana, but in the stroma of the chloroplast.