Question

Alcohol can be converted into vinegar by the action of micro-organisms called:
A. viruses
B. yeast
C. protozoa
D. bacteria

Answer 1

Answer:

D

Explanation:

1st yeast produces alcohol then by acetobacter bacteria alcohol is converted to acetic acid i.e. vinegar

Answer 2

D. bacteria

Explanation:

Fermentation is a metabolic process that converts sugar to acids and gases or alcohol. It occurs in yeast and bacteria, and also in oxygen-starved muscle cells, as in the case of lactic acid fermentation. Alcoholic fermentation is a biotechnological process accomplished by yeast, some kinds of bacteria, or a few other microorganisms to convert sugars into ethyl alcohol and carbon dioxide.

Acetic acid bacteria (AAB) are a group of Gram-negative bacteria which oxidize sugars or ethanol and produce acetic acid during fermentation.

Option D is the answer.