CR in Mitochondria

Question 1

where must pyruvate cross to complete CR

Answer 1

Through outer + inner membrane through facilitated diffusion and secondary active transport

Question 2

What is the characteristics of outer membrane

Answer 2

smooth

Question 3

What is the characteristics of the outer membrane?

Answer 3

convoluted

Question 4

where does the citric acid cycle occur?

Answer 4

inner membrane

Question 5

what happens in the absence of O2

Answer 5

no H+ gradient = pyruvate doesn’t cross the membrane and stays in the intermembrane or diffuses back in cytosol

Question 6

what is the first step of pyruvate oxidation?

Answer 6

One carbon group is removed from Pyruvate and released as CO2 through blood to lungs

Question 7

what is the second step of pyruvate oxidation

Answer 7

remaining portion of pyruvate is oxidize to convert NAD+ into NADH

Question 8

How many hydrogens are released in matrix

Answer 8

1 H+

Question 9

where does pyruvate oxidation occur ?

Answer 9

matrix

Question 10

what is the third step of pyruvate oxidation

Answer 10

CoA binds with an acetyl group to form Acetyl CoA