Question

The F0 base of ATP synthase serves as a(n) ____. Please ignore what I have circled.

21) The Fo base of ATP synthase serves as a(n)_ A) enzyme that synthesizes ATP B) enzyme that hydrolyzes ATP C) channel that conducts protons from the intermembrane space back to the matrix D) channel that conducts protons from the matrix back to the intermembrane space E)proton pump

Answer 1

Answer: C

Chemiosmotic hypothesis:

-Splitting of water result in generation of proton which gets accumulated in the lumen of thylakoid.

-Also during electron transport chain the proton gets accumulated in the lumen.

-Therefore within chloroplast the proton in the stroma decrease and in the lumen of thylakoid increase.

-It is the breakdown of this gradient that leads to generation of ATP with the help of ATP synthase.

-ATP synthase enzyme consist of two part i.e F0 and F1

-"The F0 part is embedded in the thylakoid membrane which form transmembrane channel that carries out facilitated diffusion of proton across the membrane i.e from intermembrane space to the matrix".