Did I find a mistake in ApBio Cliffs?

Test Preparation AP Sciences
1

<p>So today I was answering the photosyntesis review questions in the Cliffs Notes AP BIO review book, and on page 65, question #16

[quote]
All the following are true about photosynthesis EXCEPT:
a. the calvin cycle usually occurs in the dark
B. the majority of the light reactions occur on the stroma membranes in the chloroplast.
C. Light energy is stored in ATP
D. A proton gradient drives the formation of ATP from ADP + P
E. Glucose is made during the photosynthetic process.

[/quote]
</p>

<p>I was about to pick A but i read B and picked that. The answer key says teh right answer is A, but isnt B wrong too? light reactions happen in the thylakoid membranes!</p>

2

<p>B is poorly worded. The membranes that define the thylakoid can also be considered the membranes of the stroma. A is definitely incorrect, as it plays to a common misconception. In most cases, the Calvin Cycle happens in the light, as it occurs immediately after the light reaction. So, the “dark reaction” usually happens during the day, not at night.</p>

3

<p>k thanks, now i dont feel so incompetent. i knew A was wrong for sure, i should have just picked that.</p>