Biology Top 100 Repeated MCQs

MDCAT · NUMS · FSc · Entry Test — most asked Biology questions with answers

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These Biology MCQs are picked from high-yield FSc chapters and mix sets — the kind of questions that appear again and again in MDCAT, NUMS, and board exams. Use page navigation below to practice all 100 MCQs, then try the Biology mock test.


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#17

Change in the response to stimulus is known as

A)  Reaction

B)  Behavior

C)  Learning

D)  Activity

Answer:   B
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#18

During spermiogenesis which one of the following occurs?

A)  Spermatogonia changes to primary spermatocytes

B)  Primary spermatocyte changes to secondary spermatocyte

C)  Secondary spermatocyte changes to spermatids

D)  The spernatid changes to sperm

Answer:   D
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#19

The branch of the biology which deals with the study of development of a zygote, till hatches out or born in, is called as

A)  Ecology

B)  Histology

C)  Embryology

D)  Cytology

Answer:   C
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#20

When a gene at one locus interfares with ot hides the expression of gene at another locus, the phenomenon is called

A)  Hypostasis

B)  Epistasis

C)  Co-dominance

D)  Dominance

Answer:   B
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#21

The total number of histone molecules in a nucleosome is ?

A)  4

B)  6

C)  8

D)  16

Answer:   C
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#22

Evolution is a latin word that means

A)  Rolling

B)  Un-Rolling

C)  Folding

D)  Mystery

Answer:   B
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#23

Which one of the following is non renewable resource?

A)  Fossile fuel

B)  Fish

C)  Forest

D)  Wild fish

Answer:   A
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#24

The recombinant DNA, which is formed by joining two different pieces of donor and vector, is know as?

A)  Duplex DNA

B)  Complementary DNA

C)  Single Stranded DNA

D)  Chimeric DNA

Answer:   D
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