Use the accompanying figure to answer the question(s) below.
-As electrons are passed through the system of electron carriers associated with photosystem II, they lose energy. What happens to this energy?
A) It excites electrons of the reaction center of photosystem I.
B) It is lost as heat.
C) It is used to establish and maintain a proton gradient.
D) It is used to phosphorylate NAD+ to NADPH, the molecule that accepts electrons from photosystem I.

Question

Use the accompanying figure to answer the question(s) below. 
-As electrons are passed through the system of electron carriers associated with photosystem II, they lose energy. What happens to this energy?
A) It excites electrons of the reaction center of photosystem I. 
B) It is lost as heat. 
C) It is used to establish and maintain a proton gradient. 
D) It is used to phosphorylate NAD+ to NADPH, the molecule that accepts electrons from photosystem I.

Quizplus · Accepted Answer

The energy lost by electrons as they pass through the system of electron carriers associated with photosystem II is used to establish and maintain a proton gradient, which is essential for the production of ATP. This process is known as chemiosmosis.

Use the Accompanying Figure to Answer the Question(s) Below