Yeast is used in the production of alcohol

Asked by admin @ 31/08/2021 in Science viewed by 324 People

Tick the correct answer: (a) Yeast is used in the production of (i) sugar (ii) alcohol (iii) hydrochloric acid (iv) oxygen

(b) The following is an antibiotic (i) Sodium bicarbonate (ii) Streptomycin (iii) Alcohol (iv) Yeast
(c) Carrier of malaria-causing protozoan is (i) female Anopheles mosquito (ii) cockroach (iii) housefly (iv) butterfly
(d) The most common carrier of communicable diseases is (i) ant (ii) housefly (iii) dragonfly (iv) spider
(e) The bread or idli dough rises because of (i) heat (ii) grinding (iii) growth of yeast cells (iv) kneading
(f) The process of conversion of sugar into alcohol is called (i) nitrogen fixation (ii) moulding (iii) fermentation (iv) infection

Answered by admin @ 31/08/2021

Answers to the above questions are in:

(a) Yeast is used in the production of

(i) sugar

(ii) alcohol ⇒ is the correct answer.

(iii) hydrochloric acid

(iv) oxygen

Yeast is in the production of alcohol through a process know as fermentation. The yeast ferments the starch or sugar to form alcohol as a by-product.

(b) The following is an antibiotic

(i) Sodium bicarbonate

(ii) Streptomycin ⇒ is the correct answer

(iii) Alcohol

(iv) Yeast

Streptomycin is an antibiotic. An antibiotic is medicine that is used to treat bacterial infections.

(c) Carrier of malaria-causing protozoan is

(i) female Anopheles mosquito ⇒ is the correct answer

(ii) cockroach

(iii) housefly

(iv) butterfly

Malaria parasites are transmitted by the female anopheles mosquito

(d) The most common carrier of communicable diseases is

(i) ant

(ii) housefly

(iii) dragonfly

(iv) spider

Houseflies are the most carrier of communicable diseases

(e) The bread or idli dough rises because of

(i) heat

(ii) grinding

(iii) growth of yeast cells

(iv) kneading

The yeast mixed dough causes it to rise because the carbon dioxide they produce when they feed on the sugar.

(f) The process of conversion of sugar into alcohol is called

(i) nitrogen fixation

(ii) moulding

(iii) fermentation

(iv) infection

The process of conversion of sugar into alcohol is known as fermentation

Yeast is used in the production of alcohol

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