Question

During cellular oxidation of Glucose, ATP is produced along with formation of other products in this reaction. Which of the following events is associated with production of maximum ATP molecules per molecule of Glucose during this process? Synthesis of

A. ethanol in yeast

B. lactic acid in muscle cells

C. carbon dioxide in yeast cells

D. carbon dioxide in human cells

Answer 1

Correct option is  D. carbon dioxide in human cells

During the cellular oxidation of glucose, ATP is produced through different pathways depending on the presence of oxygen. The maximum ATP production per molecule of glucose occurs during aerobic respiration, where glucose is completely oxidized to carbon dioxide and water, producing up to 36-38 ATP molecules. In anaerobic conditions, such as fermentation, the ATP yield is much lower. For example, ethanol production in yeast and lactic acid production in muscle cells yield only 2 ATP molecules per glucose molecule.