Question

In: Biology

Under which circumstances would a muscle cell be undergoing -oxidation instead of glycolysis? Select all correct...

Under which circumstances would a muscle cell be undergoing -oxidation instead of glycolysis? Select all correct answers.

a. Cellular ATP levels are low

b. O2 is limited

c. O2 is abundant

d. Cellular ATP levels are high

e. Blood glucose levels are low

Solutions

Expert Solution

Under the circumstances would a muscle cell be undergoing oxidation instead of glycolysis are: Cellular ATP levels are low (Option A); O2 is abundant ( Option C), Blood glucose levels are low (Option E)
Because, The process of cellular respiration involves two main steps. In the first step, which is called glycolysis, glucose breaks down. In the second, aerobic respiration breaks the remains of the glucose down further. During thr aerobic respiration, oxygen is reduced, donating an electron to hydrogen to form water. The entire process of cellular respiration oxidizes glucose. This produces the majority of the energy released in cellular respiration. Fermentation also involves oxidation and reduction, and it produces ATP, but it does so less efficiently. Some simple organisms, like yeasts, use this process in the absence of oxygen. Even humans use fermentation as a kind of backup for cellular respiration in muscle cells deprived of oxygen. During fermentation, a chemical called nicotinamide adenine dinucleotide + hydrogen (NADH) is oxidized and a chemical called pyruvate is reduced. This process produces only two ATP molecules per glucose molecule, while cellular respiration produces 36 ATP molecules from a single glucose molecule.
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