There is a collection of yeast strains that are growing oncarbohydrates as their nutrient source but are missingenzymes/proteins relating to cellular respiration. Consider thefollowing strains and their ability to undergo different steps ofcellular respiration/fermentation. What portions of cellularrespiration/fermentation would be reduced or blocked completely ineach strain? Explain your rationale. Assume oxygen is present forA-D. A.
A strain that is missing the enzyme necessary for step 1 ofglycolysis in Figure 9.9, p169.
B. A strain that is missing the enzyme necessary for step 2 inthe conversion of pyruvate to acetyl CoA in Figure 9.10, p 170.
C. A strain that is missing the enzyme necessary for step 3 ofthe citric acid cycle in Figure 9.12, p171.
D. A strain that is missing the enzyme necessary to convertacetylaldehyde to ethanol in fermentation in Figure 9.17A, p178.
E. Would any of the A-D answers change if the yeast are grown inthe absence of oxygen?
There is a collection of yeast strains that are growing oncarbohydrates as their nutrient source but are missingenzymes/proteins relating to cellular respiration. Consider thefollowing strains and their ability to undergo different steps ofcellular respiration/fermentation. What portions of cellularrespiration/fermentation would be reduced or blocked completely ineach strain? Explain your rationale. Assume oxygen is present forA-D. A.
A strain that is missing the enzyme necessary for step 1 ofglycolysis in Figure 9.9, p169.
B. A strain that is missing the enzyme necessary for step 2 inthe conversion of pyruvate to acetyl CoA in Figure 9.10, p 170.
C. A strain that is missing the enzyme necessary for step 3 ofthe citric acid cycle in Figure 9.12, p171.
D. A strain that is missing the enzyme necessary to convertacetylaldehyde to ethanol in fermentation in Figure 9.17A, p178.
E. Would any of the A-D answers change if the yeast are grown inthe absence of oxygen?
For unlimited access to Homework Help, a Homework+ subscription is required.