Question

10.Yeast is used in wine and beer industries because it respires *

2 points

(a) aerobically producing oxygen

(b) aerobically producing alcohol

(c) anaerobically producing alcohol

(d) anaerobically producing CO2

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Answer 1

aerobically producing oxygen

Answer 2

Explanation:

Yeast is used in wine and beer industries because it respires *

ANAEROBICALLY PRODUCING ALCOHOL

Yeast can only undergo fermentation process in the absence of Oxygen

During anerobic respiration it produces Carbon dioxide and ALCOHOL

Thus, it is used in making alcohol, wines and beers