AP BIOLOGY

CELL RESPIRATION

ATP ADENOSINE TRIPHOSPHATE

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
About how many molecules of ATP can be generated from one molecule of glucose?
A
2
B
6
C
36
D
4
Explanation: 

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

Detailed explanation-2: -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-3: -Electron transfer from glycolysis’ NADH and FADH2 molecules, pyruvate transformation, and the Krebs cycle generates up to 32 additional ATP molecules. As a result, in the process of cellular respiration, a single molecule of glucose can yield up to 36 molecules of ATP.

Detailed explanation-4: -In eukaryotic cells, the theoretical maximum yield of ATP generated per glucose is 36 to 38, depending on how the 2 NADH generated in the cytoplasm during glycolysis enter the mitochondria and whether the resulting yield is 2 or 3 ATP per NADH.

Detailed explanation-5: -The number depends on the type of cell that we are considering. Cells such as cardiac muscle cells or liver cells that utilize the malate-aspartate shuttle generate 32 ATP molecules per glucose while cells such as skeletal muscle cells which utilize the glycerol 3-phosphate shuttle generate 30 ATP molecules.

There is 1 question to complete.