When an Organism Such as a Yeast Lives by Fermentation,it

question 40

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

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Definitions:

Sign Test

A nonparametric method utilized to identify if a median variance exists between paired data points.

Wilcoxon Signed-Rank Test

A nonparametric statistical hypothesis test used to compare two related samples, matched samples, or repeated measurements on a single sample to assess whether their population mean ranks differ.

Matched Paired

A study design in which subjects are paired based on certain criteria, with each pair receiving different treatments for comparison of the effects.

Direction Of Difference

Refers to the predicted or observed direction of relationships or differences between variables in statistical analysis, indicating whether the effect is positive or negative.