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NEET Biology (Sept)2020 PYQs
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90 questions in NEET (Sept)2020
The first phase of translation is:
A
Binding of mRNA to ribosome
B
Recognition of DNA molecule
C
Aminoacylation of tRNA
D
Recognition of an anti-codon
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The specific palindromic sequence which is
recognized by EcoRI is:
A
5'-GAATTC-3'
B
5'-GGAACC-3'
C
5'-CTTAAG-3'
D
5'-GGATCC-3'
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From his experiments, S.L. Miller produced amino
acids by mixing the following in a closed flask:
A
CH4 , H2 , NH3 and water vapor at 800°C
B
CH3 , H2 , NH4 and water vapor at 800°C
C
CH4 , H2 , NH3 and water vapor at 600°C
D
CH3 , H2 , NH3 and water vapor at 600°C
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Embryological support for evolution was
disapproved by:
A
Karl Ernst von Baer
B
Alfred Wallace
C
Charles Darwin
D
Oparin
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Which of the following refer to correct example(s)
of organisms which have evolved due to changes
in environment brought about by anthropogenic
action?
A
only (A)
B
(A) and (C)
C
(B), (C) and (D)
D
only (D)
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Flippers of Penguins and Dolphins are examples
of:
A
Adaptive radiation
B
Convergent evolution
C
Industrial melanism
D
Natural selection
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Match the following diseases with the causative
organism and select the correct option.
Column-I
Column-II
(A)Typhoid
(I)Wuchereria
(B)Pneumonia
(II)Plasmodium
(C)Filariasis
(III)Salmonella
(D)Malaria
(IV)Haemophilus
A
(A)-(I), (B)-(III), (C)-(II), (D)-(IV)
B
(A)-(III), (B)-(IV), (C)-(I), (D)-(II)
C
(A)-(II), (B)-(I), (C)-(III), (D)-(IV)
D
(A)-(IV), (B)-(I), (C)-(II), (D)-(III)
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The infectious stage of Plasmodium that enters
the human body is:
A
Trophozoites
B
Sporozoites
C
Female gametocytes
D
Male gametocytes
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Identify the wrong statement with reference to
immunity.
A
When exposed to antigen (living or dead) antibodies are produced in the host’s body. It is called "Active immunity".
B
When ready-made antibodies are directly given, it is called "Passive immunity".
C
Active immunity is quick and gives full response.
D
Foetus receives some antibodies from mother, it is an example for passive immunity.
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By which method was a new breed 'Hisardale' of
sheep formed by using Bikaneri ewes and Marino
rams?
A
Out crossing
B
Mutational breeding
C
Cross breeding
D
Inbreeding
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