KA2- Citric Acid Cycle Flashcards
1
Q
What happens to pyruvate during aerobic conditions?
A
Pyruvate enters the matrix of the mitochondrion and CO2 is removed to form an acetylene group
2
Q
What does this acetyl group combine with?
A
Coenzyme A
3
Q
What does acetylene + coenzyme A form?
A
Acetyl coenzyme A
4
Q
How does the acetyl group form acetyl coenzyme A enter the CAC?
A
By combining with oxaloacetate
5
Q
What does the acetyl group and oxaloacetate form?
A
Citrate
6
Q
How many carbons does citrate have?
A
6
7
Q
How many carbons does oxaloacetate have?
A
4
8
Q
Coenzyme A returns and combines with what?
A
Another acetyl group from the next pyruvate
9
Q
What is citrate gradually converted back into during a series of enzyme controlled steps and what does it release as a waste product?
A
Oxaloacetate, releasing 2CO2
