EVERYDAY SCIENCE

SCIENCE

RESPIRATION

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
How many ATP are formed during cellular respiration?
A
24 ATP
B
36 ATP
C
100 ATP
D
2 ATP
Explanation: 

Detailed explanation-1: -The citric acid cycle produces 36 ATP molecules. So, in aerobic respiration, a total of 38 molecules of ATP are created, with 2 ATP molecules formed outside the mitochondria.

Detailed explanation-2: -Answer and Explanation: Cellular respiration produces 36 total ATP per molecule of glucose across three stages.

Detailed explanation-3: -Some textbooks state that the net yield is 36 ATPs in eukaryotes because 2 ATPs are used up to power cellular respiration itself in moving 2 NADH molecules into a mitochondrian (38 ATPs-2 ATPs = 36 ATPs).

Detailed explanation-4: -Electron transport from the molecules of NADH and FADH2 made from glycolysis, the transformation of pyruvate, and the Krebs cycle creates as many as 32 more ATP molecules. Therefore, a total of up to 36 molecules of ATP can be made from just one molecule of glucose in the process of cellular respiration.

Detailed explanation-5: -Therefore, pyruvate diffuses into mitochondria and the gets converted into acetyl CoA to enter citric acid cycle. During citric acid cycle, 36 ATP molecules are produced. So, all total here are 38 molecules of ATP produced in aerobic respiration and 2 ATP are formed outside the mitochondria.

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