When an Organism Such as a Yeast Lives by Fermentation

question 3

Multiple Choice

When an organism such as a yeast lives by fermentation, it converts the pyruvate from glycolysis into a different compound, such as alcohol. Why doesn't it secrete the pyruvate directly?

• A)The conversion yields 32 ATP per pyruvate molecule.
• B)The conversion yields one NADH per pyruvate molecule.
• C)The conversion is needed to regenerate the molecules needed for glycolysis.
• D)A buildup of pyruvate in the surrounding environment would be too toxic.

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Definitions:

Employment

The condition of having a paid job or occupation, involving a contract between an employer and an employee that provides compensation for work performed.

Marginal Product

The additional output that is produced by adding one more unit of a variable resource, such as labor or capital, to the production process.

Average Product

The output produced per unit of a factor of production, calculated by dividing total product by the quantity of the input.

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