5) Metabolic Pathways and Bioenergetics of Skeletal Muscle Part 2

Which structure within the mitochondrion increases surface area for ATP production?

Cristae

Where does the citric acid (Krebs) cycle take place within the mitochondrion?

Matrix

What is the correct sequence for pyruvate metabolism in aerobic respiration?

Pyruvate → Acetyl CoA → Citric acid cycle → NADH/FADH2

What is the immediate product when acetyl CoA combines with oxaloacetate?

Citrate

Which of the following is not a product of the citric acid cycle?

Pyruvate

What is the main role of the electron transport chain in the mitochondria?

To transfer electrons and pump protons for ATP synthesis

Where in the mitochondrion are the proteins of the electron transport chain located?

Inner membrane of cristae

What directly powers the ATP synthase enzyme to produce ATP?

Flow of protons through a membrane channel

What is the total ATP yield per glucose molecule via aerobic metabolism?

36–40 ATP

How do fatty acids enter the citric acid cycle?

After being converted to acetyl CoA

Which of the following statements about protein metabolism is correct?

Amino acids enter at various points in aerobic metabolism

What compound is regenerated at the end of the citric acid cycle to restart the process?

Oxaloacetate

Which of the following best explains why aerobic metabolism produces more ATP than anaerobic metabolism?

It includes both citric acid cycle and oxidative phosphorylation

What happens to NAD+ and FAD after they release electrons in the electron transport chain?

They return to the citric acid cycle to collect more electrons