Cells UPSC Questions

Biology

Cells MCQ Questions


1.
Who discovered the live cell?
A.
Robert Hooke
B.
Anton Von Leeuwenhoek
C.
Robert Brown
D.
Theodore Schwann
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ANSWER :
B. Anton Von Leeuwenhoek
2.
Which of the following is a characteristic of prokaryotic cells?
A.
Presence of membrane-bound organelles
B.
DNA enclosed in a nucleus
C.
Presence of mesosome
D.
Presence of mitochondria
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ANSWER :
C. Presence of mesosome
3.
What is the function of plasmodesmata in plant cells?
A.
Protein synthesis
B.
DNA replication
C.
Connecting cytoplasm of adjacent cells
D.
Secretion of enzymes
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ANSWER :
C. Connecting cytoplasm of adjacent cells
4.
Which cell organelle is known as the 'powerhouse of the cell'?
A.
Nucleus
B.
Chloroplast
C.
Mitochondrion
D.
Golgi apparatus
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ANSWER :
C. Mitochondrion
5.
Consider the following statements in respect of probiotics:
1.Probiotics are made of both bacteria and yeast.
2.The organisms in probiotics are found in foods we ingest but they do not naturally occur in our gut.
3.Probiotics help in the digestion of milk sugars.
Which of the statements given above is/are correct?

UPSC - 2022

A.
1 only
B.
2 only
C.
1 and 3
D.
2 and 3
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ANSWER :
C. 1 and 3
6.
The fluid mosaic model of the plasma membrane was proposed by:
A.
Robert Hooke
B.
Singer and Nicolson
C.
Schleiden and Schwann
D.
Rudolf Virchow
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ANSWER :
B. Singer and Nicolson