Question

A) what effect does increasing a cell's NADH/NAD+ ratio have?

1. No effect on citric acid cycle activity

2. decrease in citric acid cycle efficiency

3. decrease in citric acid cycle activity

4. increase in citric acid cycle activity  

B) Which of the following mechanisms allow ATP synthase complex to release ATP as proton flow occurs?

1. activation

2. conformational coupling

3. chemiosmosis

4. oxidative phosphorylation

Answer 1

1. Increasing the cell's NAD+/NADH ratio decreases the citric acid activity. Hence, the correct answer is option 3.

2. Oxidative phosphorylation is the mechanism that allows ATP synthase complex to release ATP as proton flow occurs. Hence, the correct answer is option 4.