AP BIOLOGY

CELL RESPIRATION

THE KREBS CYCLE

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Glycolysis, Pre-Krebs, and the Krebs cycle all contribute this to the electron transport system?
A
NADH
B
FADH2
C
O2
D
ATP
Explanation: 

Detailed explanation-1: -The net energy output for one glucose molecule from glycolysis through the Krebs cycle is: 4 ATP, 10 NADH + H+, and 2 FADH2.

Detailed explanation-2: -10 NADH (including 2 from glycolysis)

Detailed explanation-3: -NADH and FADH2 molecules formed during Glycolysis and Krebs Cycle carry their electrons to the electron transport chain. The electron transport chain creates a proton gradient that ultimately leads to the production of a large amount of ATP.

Detailed explanation-4: -Glycolysis occurs in the cytosol, but the Krebs cycle and electron transport chain occur inside the mitochondria. Electron carriers such as NADH produced during glycolysis and the Krebs cycle pass their electrons to the electron transport chain, which results in synthesis of a lot of ATP.

There is 1 question to complete.