Quiz 12 Review

Question 1

What does pyruvate lose and then change into when it enters the mitochondrial membrane?

Answer 1

Looses COOH and gains coAsh

Question 2

What else is produced as part of this process that will be used later in ATP production?

Answer 2

NADH

Question 3

What is “TCA” an abbreviation for?

Answer 3

Tricarboxylic Acid Cycle

citric acid cycle

Question 4

What is the specific TCA that occurs in the first reaction of the TCA cycle?

Answer 4

Acetyle-CoA condenses with oxalosuccinate to form citrate

Question 5

What is the purpose of the TCA cycle as defined in class?

Answer 5

the oxidation of Acetyl-CoA

Question 6

What is pyruvate converted to that starts the TCA cycle?

Answer 6

The first reaction occurs from condensation of acetyl-CoA with oxaloacetate to form citrate

Question 7

Since the purpose of the TCA cycle converts pyruvate, recall what Acetyl-CoA condenses with to produce that specific TCA from three questions ago?

Answer 7

Acetyl-CoA condenses with Oxalosuccinate to form citrate

Question 8

During the cycle, as what molecule will the carbon atoms that originated in Acetyl-CoA end up?

Answer 8

CO2

Question 9

By the time the TCA cycle has metabolized one Acetyl-CoA, what three specific molecules and how many of each will have been produced that will contribute to the pool of ATP needed by the cell?

Answer 9

3 NADH
2 CO2
1 FADH2

Question 10

The TCA cycle occurs in the cytosol- true or false? If false, what cellular compartment should it be?

Answer 10

the citric acid cycle occurs in the matrix of the mitochondrion

Question 11

You know that TCA cycle involves oxidation. Since there must be reduction to go along with oxidation, and molecules that occur in the cycle are the things oxidized, what are the two molecules that are reduced during this process?

Answer 11

NAD

FAD

Question 12

By now you know that an ATP is made by the TCA cycle. From which specific compound did the phosphate come from in producing this ATP?

Answer 12

GDP