Explore topic-wise MCQs in Cytogenetics.

This section includes 19 Mcqs, each offering curated multiple-choice questions to sharpen your Cytogenetics knowledge and support exam preparation. Choose a topic below to get started.

1.

RNA pol II will be isolated from the nuclear parts outside the nucleolus.

A. True
B. False
Answer» B. False
Discussion
2.

The rRNA primary transcript is located in________

A. Nucleus
B. NOR
C. Cytoplasm
D. Nuclear pore
Answer» C. Cytoplasm
Discussion
3.

Which of the following is not a normal processing step of the tRNA?

A. The 3’ end U is replaced by CCA
B. The Purines are methylated and isopentyl groups are transferred to them
C. The 3’ OH is methylated
D. U bases at specific sites are converted to pseudo uridine, ribo thimidine or dihydrouridine
Answer» D. U bases at specific sites are converted to pseudo uridine, ribo thimidine or dihydrouridine
Discussion
4.

The 5’ end of the tRNA transcript is cleaved by____________

A. RNase K
B. Exonuclease VII
C. Endonucleace I
D. Rnase P
Answer» E.
Discussion
5.

Which one of the following characters doesn’t go along with tRNA?

A. Its primary transcript is processed by proteins
B. The cleavage at the 5’ and 3’ end of the intron is simultaneous
C. The introns are seen in yeast and they are larger than exons
D. ATP and GTP hydrolysis joins the two RNA halves at the two ends of the introns
Answer» D. ATP and GTP hydrolysis joins the two RNA halves at the two ends of the introns
Discussion
6.

The pre-rRNA transcript transcribed by the RNA pol Idoesn’t include_________

A. 18S
B. 5S
C. 5.8S
D. 28S
Answer» C. 5.8S
Discussion
7.

WHICH_OF_THE_FOLLOWING_IS_NOT_A_NORMAL_PROCESSING_STEP_OF_THE_TRNA??$

A. The 3’ end U is replaced by CCA
B. The Purines are methylated and isopentyl groups are transferred to them
C. The 3’ OH is methylated
D. U bases at specific sites are converted to pseudo uridine, ribo thimidine or dihydrouridine
Answer» D. U bases at specific sites are converted to pseudo uridine, ribo thimidine or dihydrouridine
Discussion
8.

RNA pol II will be isolated from the nuclear parts outside the nucleolus.$

A. True
B. False
Answer» B. False
Discussion
9.

The rRNA primary transcript is located in________$

A. Nucleus
B. NOR
C. Cytoplasm
D. Nuclear pore
Answer» C. Cytoplasm
Discussion
10.

The 45S rRNA transcript is first broken into ______________

A. 32S and 20S
B. 19S and 36S
C. 6S and 40S
D. 32S, 20s and 7S
Answer» B. 19S and 36S
Discussion
11.

The 5’ end of the tRNA transcript is cleaved by___________?#

A. RNase K
B. Exonuclease VII
C. Endonucleace I
D. Rnase P
Answer» E.
Discussion
12.

Which one of the following characters doesn’t go along with tRNA?$

A. Its primary transcript is processed by proteins
B. The cleavage at the 5’ and 3’ end of the intron is simultaneous
C. The introns are seen in yeast and they are larger than exons
D. ATP and GTP hydrolysis joins the two RNA halves at the two ends of the introns
Answer» D. ATP and GTP hydrolysis joins the two RNA halves at the two ends of the introns
Discussion
13.

Bacterial pre rRNA transcript has ________________

A. 23S 4S 16S 5S
B. 16S 4S 23S 5S
C. 16S 5S 23S
D. 23S 16S 5S
Answer» C. 16S 5S 23S
Discussion
14.

Which of the following is not a normal modification of the rRNA primary transcript?

A. Conversion of U base to Pseudo uridine
B. Methylation of the 2’- OH region of specific rRNA bases
C. Cleavage of the intervening regions by exonucleases
D. Proteins modulating the cleavage
Answer» E.
Discussion
15.

The cleavage of the rRNA is aided by the snRNA.

A. True
B. False
Answer» C.
Discussion
16.

The primary transcript is ______________

A. 52S
B. 45S
C. 32S
D. 17S
Answer» C. 32S
Discussion
17.

The pre-rRNA transcript transcribed by the RNA pol Idoesn’t include_________$

A. 18S
B. 5S
C. 5.8S
D. 28S
Answer» C. 5.8S
Discussion
18.

tRNA constitutes ___________ % of all RNA.

A. 85
B. 25
C. 15
D. <5
Answer» D. <5
Discussion
19.

If you run the whole RNA extract on a gel you will get ____________ bands normally.

A. Many
B. One
C. Two
D. Three
Answer» D. Three
Discussion