Quick 10Q: Krebs Cycle

Front

Where does the Krebs cycle take place?

Back

Mitochondrial matrix.

Front

What is the starting material for the Krebs cycle?

Back

Acetyl CoA.

Front

What is the role of NADH in the Krebs cycle?

Back

NADH acts as an electron carrier, transporting high-energy electrons to the electron transport chain.

Front

What is the difference between NADH and FADH2?

Back

Both are electron carriers; NADH holds higher energy electrons than FADH2.

Front

Why is oxygen important for the Krebs cycle?

Back

Without oxygen, NADH cannot be oxidized to continue receiving electrons as NAD+.

Front

What are the main products of the Krebs cycle?

Back

The main products are NADH, FADH2, ATP, and carbon dioxide.

Front

How many times does the Krebs cycle turn per glucose molecule?

Back

The Krebs cycle turns twice per glucose molecule.

Front

What is the significance of acetyl CoA in cellular respiration?

Back

Acetyl CoA is the starting material for the Krebs cycle, derived from pyruvate.

Front

What happens to the carbon atoms in acetyl CoA during the Krebs cycle?

Back

They are released as carbon dioxide during the cycle.

Front

What is substrate-level phosphorylation?

Back

A process of generating ATP directly in the Krebs cycle without the use of the electron transport chain.