SSC MTS EXAM

SSC

BIOLOGY

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Your mother adds yeast to her bread so it will “rise". What by-product of anaerobic respiration makes this possible?
A
alcohol
B
carbon dioxide
C
lactic acid
D
oxygen
Explanation: 

Detailed explanation-1: -In yeast, the glucose breaks down anaerobically to produce alcohol as the end product and carbon dioxide gas as the byproduct.

Detailed explanation-2: -Ethanol is produced by alcoholic fermentation of the glucose in corn or other plants. This type of fermentation also explains why bread dough rises.

Detailed explanation-3: -during anaerobic respiration, yeasts produce alcohol. Glucose is broken down into ethanol and carbon dioxide with the release of energy. Lactic acid is produced in muscles when they respire anaerobically.

There is 1 question to complete.