The number and arrangement of membranes inside a chloroplast are important to the chloroplast's functions.How would the absence of these membranes affect the manufacture of ATP in a chloroplast?
A) The chloroplast would be unable to maintain the proton gradient required for ATP production.
B) The chloroplast would be unable to capture ATP directly from the sun.
C) The chloroplast would be unable to perform the Calvin cycle.
D) The chloroplast would be unable to perform anaerobic respiration.

Question

Quizplus · Accepted Answer

The absence of membranes in a chloroplast would prevent the formation of separate compartments within the organelle. This would mean that there would be no thylakoid membranes where the light-dependent reactions of photosynthesis occur. Without these membranes, the chloroplast would be unable to maintain the proton gradient required for ATP synthesis through chemiosmosis. Therefore, A is the best choice.

The Number and Arrangement of Membranes Inside a Chloroplast Are