Pyruvate Oxidation & CAC

Where does pyruvate oxidation occur in the cell?

• Cytoplasm

• Mitochondrial matrix

• Nucleus

• Endoplasmic reticulum

What is the main product of pyruvate oxidation that enters the citric acid cycle?

• Glucose

• Acetyl CoA

• Lactate

• Oxaloacetate

How many molecules of NADH are produced per glucose molecule during pyruvate oxidation?

• 1

• 2

• 3

• 4

What is the first molecule that acetyl CoA combines with in the citric acid cycle?

• Citrate

• Oxaloacetate

• Succinate

• Fumarate

How many molecules of CO₂ are released per turn of the citric acid cycle?

• 1

• 2

• 3

• 4

How many ATP molecules are produced per turn of the citric acid cycle?

• 1

• 2

• 3

• 4

What is the total number of NADH molecules produced per glucose molecule after glycolysis, pyruvate oxidation, and the citric acid cycle?

• 6

• 8

• 10

• 12

In which part of the mitochondria does the citric acid cycle take place?

• Inner membrane

• Outer membrane

• Intermembrane space

• Mitochondrial matrix

How does pyruvate cross the outer mitochondrial membrane?

• voltage-dependent anion channel (VDAC)

• ATP synthase

• pyruvate transferase (PT)

• mitochondrial pyruvate carrier (MPC)

How does pyruvate cross the inner mitochondrial membrane?

• voltage-dependent anion channel (VDAC)

• ATP synthase

• pyruvate transferase (PT)

• mitochondrial pyruvate carrier (MPC)