Chapter 9.3

Question 1

What is the transition step between Glycolysis and the Citric Acid Cycle?

Answer 1

Pyruvate Oxidation

Question 2

Acetyle CoA

What is it called? What is its function/role?

Answer 2

A compound called acetyle coenzyme A.

This is the first thing that pyruvate is converted into after entering the mitochrondrion.

Question 3

Coenzyme A

What is its function?

Answer 3

It is a molecule/enzyme that aids in pyruvate oxidation.

Question 4

What are the inputs of Pyruvate Oxidation?

Answer 4

1. Two Pyruvate (3-C) molecules
2. NAD+
3. CoA

Question 5

What are the outputs of Pyruvate Oxidation?

Answer 5

1. Two Acetyle CoA molecules
2. Two NADH molecules
3. Two CO2 molecules

Question 6

Citric Acid Cycle

What is its function?

Answer 6

It further oxidizes (loses electrons) organic fuel derived from pyruvate.

Question 7

For each Acetyle CoA, what are the outputs of the Citric Acid Cycle?

Answer 7

1. One ATP molecule
2. Three NADH molecules
3. One FADH2 molecule
4. Two CO2 molecules

The total production for the two Acetyle CoA’s produced in the Pyruvate Oxidative process is double this amount.

Question 8

Where does the Citric Acid Cycle occur?

Answer 8

Mitochondrial Matrix

Question 9

What is the total ATP count after Glycolysis and the Citric Acid Cycle?

Answer 9

4 ATP, with two from each process

Question 10

Is glucose completed oxidized by the end of the Citric Acid cycle?

Answer 10

Yes.