Genetics-V-Biology Test Series for NEET - 2020

Test Preparation on Genetics – V Biology Test Series for NEET - 2020

1.

A complex of ribosomes attached to a single strand of RNA
is known as

1Polysome
2Polymer
3Polypeptide
4Okazaki fragment

2.

Isolation and purification of specific DNA segment from a
living organism was achieved by

1Crick
2Nirenberg
3Khorana
4Beckwith and his colleagues

3.

Which of the following is true for nucleolus

1Larger nucleoli are present in dividing cells
2It is a membrane-bound structure
3It takes part in spindle formation
4It is a site for active ribosomal RNA synthesis

4.

Antiparallel strands of a DNA molecule means that

1The phosphate groups at the start of two DNA strands are in opposite position (pole)
2One strand turns clockwise
3One strands turns anti-clockwise
4The phosphate groups of two DNA strands, at their ends, share the same position

5.

RNA interference is essential for the

1Cell proliferation
2Cell defence
3Cell differentiation
4Micropropagation

6.

Uridine, present only in RNA is

1Nucleoside
2Nucleotide
3Purine
4Pyrimidine

(d) Uracil base is found in RNA, in this way, uridine
monophosphate is the nucleotide of RNA.

7.

1Adenylic acid
2Uracil
3Cholesterol
4Adenosine

8.

There is no DNA in

1An enucleated ovum
2Mature RBCs
3A mature spermatozoan
4Hair root

9.

Removal of introns and joining the exons in a defined order
in a transcription unit is called

1Splicing
2Tailing
3Transformation
4Capping

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