Quick 10Q: Krebs Cycle

Front

What are the main products formed in one turn of the Krebs cycle?

Back

1 ATP, 3 NADH, 1 FADH2, 2 CO2

Front

What percentage of glucose is left after the Krebs cycle?

Back

0%

Front

Why does the Krebs cycle require oxygen?

Back

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

Front

How many turns of the Krebs cycle occur per glucose molecule?

Back

2

Front

How does the Krebs cycle contribute to ATP synthesis?

Back

High energy electrons are stored in NADH and FADH2 to shuttle to the ETC to generate a proton gradient.

Front

What is the primary function of the Krebs cycle in cellular respiration?

Back

To generate high-energy electron carriers (NADH and FADH2) and ATP.

Front

What is the role of NADH in the Krebs cycle?

Back

NADH carries high-energy electrons to the electron transport chain.

Front

What is the significance of FADH2 in the Krebs cycle?

Back

FADH2 also carries high-energy electrons to the electron transport chain, contributing to ATP production.

Front

What happens to carbon atoms in glucose during the Krebs cycle?

Back

They are released as CO2.

Front

What is the starting molecule for the Krebs cycle?

Back

Acetyl-CoA.