Problem: Yeasts and many bacteria are facultative anaerobes that is, they make ATP by fermentation in the absence of oxygen, but if oxsygen is present, they can undergo aerobic respiration. Why would it be advantageous for them to be able to make ATP by aerobic respiration? Hint: Compare the amount of ATP produced in each process.

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Yeasts and many bacteria are facultative anaerobes that is, they make ATP by fermentation in the absence of oxygen, but if oxsygen is present, they can undergo aerobic respiration. Why would it be advantageous for them to be able to make ATP by aerobic respiration? Hint: Compare the amount of ATP produced in each process.

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