EVERYDAY SCIENCE

SCIENCE

RESPIRATION

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
How many ATP molecules can a glucose molecule produce in total?
A
2
B
4
C
34
D
38
Explanation: 

Detailed explanation-1: -Oxidation of one molecule of glucose molecule during cellular respiration generates 38 ATP molecules-2 from glycolysis, 2 from Krebs cycle, and 34 from the electron transport system. Therefore, two glucose molecules can generate 76 ATP molecules.

Detailed explanation-2: -During anaerobic respiration of yeast, two ATP molecules are produced from each glucose molecule. Hence, 38 ATP will require 19 glucose molecules.

Detailed explanation-3: -Final answer: Out of 38 ATP molecules produced per glucose, 32 ATP molecules are formed from NADH/ FADH2 in the respiratory chain.

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: -In aerobic respiration, one glucose molecule results in a net ATP gain of 38 ATP. It comprises ATP generated during glycolysis, the link reaction, the TCA cycle, and oxidative phosphorylation in the electron transport system.

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