AP BIOLOGY

CELL RESPIRATION

AEROBIC RESPIRATION

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
How many times does the Kreb’s Cycle “turn” per glucose?
A
1
B
2
C
3
D
6
Explanation: 

Detailed explanation-1: -Two turns are needed because glycolysis produces two pyruvic acid molecules when it splits glucose.

Detailed explanation-2: -For one glucose molecules, there will be two rounds of Krebs cycle. This is because two molecules of Pyruvic acid are formed from one molecule of glucose during Glycolysis.

Detailed explanation-3: -In the Krebs cycle, two ATP, six NADH +H+, and two FADH2 were produced. A net of four ATPs was produced from glycolysis through the Krebs cycle. More ATP will be produced from reduced coenzymes in the mitochondria during the electron transport chain and oxidative phosphorylation.

Detailed explanation-4: -Results of the Krebs Cycle After the second turn through the Krebs cycle, the original glucose molecule has been broken down completely. All six of its carbon atoms have combined with oxygen to form carbon dioxide.

Detailed explanation-5: -Krebs cycle produces the following: Two molecules of carbon dioxide are given off. One molecule of ATP is formed.

There is 1 question to complete.