Respiration: The Citric Acid Cycle Flashcards
1
Q
Where does the citric acid cycle occur?
A
In the matrix of the mitochondria.
2
Q
What happens to pyruvate in the presence of oxygen?
A
Pyruvate is broken down to an acetyl group.
3
Q
What is acetyl coenzyme A?
A
An acetyl group combined with coenzyme A.
4
Q
How is citrate formed?
A
When acetyl coenzyme A combines with oxaloacetate.
5
Q
What is released from the citric acid cycle?
A
Carbon dioxide.
6
Q
What do dehydrogenases do?
A
Remove hydrogen and electrons from intermediates in the citric acid cycle.
7
Q
How is NAD converted to NADH?
A
Hydrogen and electrons are passed to NAD.
8
Q
What happens to the hydrogen ions and electrons from NADH?
A
They are passed to the electron transport chain on the inner mitochondrial membrane.
