Proton-motive Force (pmf): refers to ΔG stored in a proton gradient; has two components:
1. Chemical potential energy (ΔpH) - difference in H+ concentration across the membrane
2. Electrical potential energy (Δψ) -results from charge imbalance when H+ is transferred without a counter ion
Which of the following processes generates a proton-motive force in mitochondria?
a. The reduction of NAD+ by the first electron carrier in the electron transport chain.
b. The flow of protons through ATP synthase down their concentration gradient.
c. Pumping of hydrogen ions from the mitochondrial matrix across the inner membrane and into the intermembrane space.
d. Lowering of pH in the mitochondrial matrix.
Frequently Asked Questions
What scientific concept do you need to know in order to solve this problem?
Our tutors have indicated that to solve this problem you will need to apply the ATP Synthesis Driven from Proton Gradients concept. You can view video lessons to learn ATP Synthesis Driven from Proton Gradients. Or if you need more ATP Synthesis Driven from Proton Gradients practice, you can also practice ATP Synthesis Driven from Proton Gradients practice problems.
What professor is this problem relevant for?
Based on our data, we think this problem is relevant for Professor Wu's class at UTD.