Respiration UPSC Questions

Biology

Respiration MCQ Questions


1.
What is the primary reason organisms respire?
A.
To excrete waste
B.
To move
C.
To release energy from food
D.
To reproduce
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ANSWER :
C. To release energy from food
2.
Which of the following is an example of anaerobic respiration?
A.
Breakdown of glucose using oxygen
B.
Breakdown of glucose without using oxygen
C.
Inhalation of air
D.
Exhalation of carbon dioxide
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ANSWER :
B. Breakdown of glucose without using oxygen
3.
What is the breathing rate of an adult human at rest?
A.
9–12 times/min
B.
15–18 times/min
C.
21–24 times/min
D.
30–33 times/min
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ANSWER :
B. 15–18 times/min
4.
What causes muscle cramps after heavy exercise?
A.
Accumulation of carbon dioxide
B.
Accumulation of alcohol
C.
Accumulation of lactic acid
D.
Lack of water
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ANSWER :
C. Accumulation of lactic acid
5.
With reference to the recent developments in science, which one of the following statements is not correct?

UPSC - 2019

A.
Functional chromosomes can be created by joining segments of DNA taken from cells of different species.
B.
Pieces of artificial functional DNA can be created in laboratories.
C.
A piece of DNA taken out from an animal cell can be made to replicate outside a living cell in a laboratory.
D.
Cells taken out from plants and animals can be made to undergo cell division in laboratory petri dishes
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ANSWER :
A. Functional chromosomes can be created by joining segments of DNA taken from cells of different species.
6.
In humans, where does the exchange of gases occur?
A.
Stomach
B.
Heart
C.
Lungs
D.
Liver
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ANSWER :
C. Lungs