Anaerobic Respiration and Fermentation Video Lessons

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Problem: Suppose you discovered a mutant yeast whose glycolytic pathway was shorter because of the presence of a new enzyme catalyzing the following reaction:Glyceraldehyde 3-phosphate + H2O + NAD+ → NADH + H+ + 3-phosphoglycerateWhich of the following changes would you expect to find in the growth and metabolism of the mutant yeast?A. The mutation will cause the yeast to grow faster under aerobic conditions.B. The formation of pyruvate from glucose will be energetically more favorable.C. The formation of pyruvate from glucose will be energetically less favorable.D. The mutation will cause the yeast to grow faster under anaerobic conditions.E. The mutant will not grow under anaerobic conditions.F. The mutant will not grow under aerobic conditions.

FREE Expert Solution

Yeast is a known eukaryote that is capable of doing fermentation as part of anaerobic respiration. This means, in the absence of oxygen, they would be able to replenish NAD+ so that the needed amount for glycolysis will be supplied as to let it proceed uninterrupted.

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Problem Details

Suppose you discovered a mutant yeast whose glycolytic pathway was shorter because of the presence of a new enzyme catalyzing the following reaction:

Glyceraldehyde 3-phosphate + H2O + NAD+ → NADH + H+ + 3-phosphoglycerate

Which of the following changes would you expect to find in the growth and metabolism of the mutant yeast?

A. The mutation will cause the yeast to grow faster under aerobic conditions.

B. The formation of pyruvate from glucose will be energetically more favorable.

C. The formation of pyruvate from glucose will be energetically less favorable.

D. The mutation will cause the yeast to grow faster under anaerobic conditions.

E. The mutant will not grow under anaerobic conditions.

F. The mutant will not grow under aerobic conditions.

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What scientific concept do you need to know in order to solve this problem?

Our tutors have indicated that to solve this problem you will need to apply the Anaerobic Respiration and Fermentation concept. You can view video lessons to learn Anaerobic Respiration and Fermentation. Or if you need more Anaerobic Respiration and Fermentation practice, you can also practice Anaerobic Respiration and Fermentation practice problems.

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Based on our data, we think this problem is relevant for Professor Polcyn's class at CSUSB.