NEET NCERT Biology Molecular Basis of Inheritance bits,grand test series

Molecular Basis of Inheritance Model Test-6

Question No:1

The product of transcription process is in fact

[A] Entire segment of DNA copied to RNA
[B] Only segment of DNA copied to RNA
[C] Both (a) and (b)
[D] None of these



Question No:2

In the process of transcription, the strand of DNA with polarity _____ acts as a ____ strand.

[A] 5 —> 5, Coding strand
[B] 3 —> 5 Template strand
[C] 3 —> 3, Coding strand
[D] 5 —> 3, Template strand



Question No:3

The promoter and _____ flank the structural gene in a transcription unit

[A] structure
[B] regulator
[C] operator
[D] terminator



Question No:4

A segment of DNA coding for a polypeptide is termed as:

[A] Intron
[B] Exon
[C] Cistron
[D] Distron



Question No:5

The coding sequences of DNA are known as _____ and the intervening sequences are known as _____ respectively.

[A] exon, intron
[B] intron, exon
[C] cistron, exon
[D] exon, cistron



Question No:6

In bacteria, which of the following plays a structural and catalytic role in the translation process?

[A] mRNA
[B] rRNA
[C] tRNA
[D] DNA



Question No:7

What are the components required for the initiation of transcription in bacteria?

[A] RNA polymerase only
[B] Promoter, RNA polymerase and p-factor
[C] density factor only
[D] sigma factor only



Question No:8

density-factor in the process of transcription in bacteria is also known as

[A] Initiation factor
[B] Elongation factor
[C] Termination factor
[D] Vital factor



Question No:9

In bacteria, in context of mRNA, which of the following is not true?

[A] Transcription and translation takes place in different compartment.
[B] Post-transcriptional modifications are required like splicing.
[C] Translation occurs only after transcription.
[D] All of these.



Question No:10

Total number of RNA polymerase found in eukaryotes is

[A] 3
[B] 4
[C] 2
[D] 5



Question No:11

Which of the following RNA is transcribed by RNA polymerase II in eukaryotes?

[A] tRNA
[B] rRNA
[C] snRNA
[D] hnRNA



Question No:12

RNA polymerase I transcribes _____ in eukaryotes.

[A] tRNA
[B] rRNA
[C] snRNA
[D] hnRNA



Question No:13

In eukaryotes, RNA polymerase III is responsible for synthesis of

[A] 28 S RNA, 18 S RNA and 5.8 S RNA
[B] tRNA, hnRNA, rRNA
[C] tRNA, SsRNA, snRNA
[D] hnRNA, tRNA, rRNA



Question No:14

The intervening sequences in the primary transcript of mRNA are removed by

[A] Recombination
[B] Linkage
[C] Capping
[D] Splicing



Question No:15

Additional post-transcriptional processing like capping and tailing is characteristic to

[A] rRNA
[B] hnRNA
[C] snRNA
[D] tRNA