CELL RESPIRATION
THE KREBS CYCLE
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
|
|
2
|
|
|
4
|
|
|
6
|
|
|
8
|
Detailed explanation-1: -In one turn of the Krebs cycle, 3 molecules of NADH are produced.
Detailed explanation-2: -In glycolysis, two ATP were invested, and four ATP and two NADH + H+ were produced. In the conversion of pyruvate to acetyl CoA, two NADH + H+ were produced. In the Krebs cycle, two ATP, six NADH +H+, and two FADH2 were produced.
Detailed explanation-3: -Note that this process completely oxidizes 1 molecule of pyruvate, a 3 carbon organic acid, to 3 molecules of CO2. During this process, 4 molecules of NADH, 1 molecule of FADH2, and 1 molecule of GTP (or ATP) are produced.
Detailed explanation-4: -Kreb’s cycle is the second phase of aerobic respiration during which acetyl CoA condenses with OAA to form citrate which undergoes oxidative decarboxylation forming 3 molecules of NADH2 and one molecule FADH2.
Detailed explanation-5: -Answer and Explanation: For each glucose molecule there are two net ATP and two NADH formed during glycolysis.