Figure 10.1
-In thylakoids, protons travel through ATP synthase from the stroma to the thylakoid space. Therefore the catalytic "knobs" of ATP synthase would be located
A)on the side facing the thylakoid space.
B)on the ATP molecules themselves.
C)on the pigment molecules of PSI and PSII.
D)on the stroma side of the membrane.
E)built into the center of the thylkoid stack (granum).

Question

Figure 10.1 
-In thylakoids, protons travel through ATP synthase from the stroma to the thylakoid space. Therefore the catalytic "knobs" of ATP synthase would be located
A)on the side facing the thylakoid space. 
B)on the ATP molecules themselves. 
C)on the pigment molecules of PSI and PSII. 
D)on the stroma side of the membrane. 
E)built into the center of the thylkoid stack (granum).

Quizplus · Accepted Answer

The catalytic "knobs" of ATP synthase are located on the stroma side of the thylakoid membrane, where ATP synthesis occurs as protons flow back into the stroma.

Figure 10.1 -In Thylakoids, Protons Travel Through ATP Synthase from the Stroma