AP BIOLOGY

CELL RESPIRATION

THE KREBS CYCLE

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
The number of ATP molecules produced per glucose molecule that undergoes the Krebs Cycle and its introductory transitional reaction is:
A
2
B
3
C
4
D
0
Explanation: 

Detailed explanation-1: -Hence, during the complete oxidation of one molecule of glucose, 38 molecules of ATP are produced.

Detailed explanation-2: -The Krebs cycle is the second phase in cellular respiration. It occurs in the mitochondria in the cell. The number of ATP molecules produced in the Krebs cycle is 2.

Detailed explanation-3: -The net energy output for one glucose molecule from glycolysis through the Krebs cycle is: 4 ATP, 10 NADH + H+, and 2 FADH2. In glycolysis, two ATP were invested, and four ATP and two NADH + H+ were produced.

Detailed explanation-4: -All told, the Krebs cycle forms (per two molecules of pyruvic acid) two ATP molecules, ten NADH molecules, and two FADH2 molecules.

Detailed explanation-5: -2 ATPs are produced in the TCA cycle per glucose molecule (2 acetyl CoA).

There is 1 question to complete.