Free Molecular Basis Of Inheritance (Weekly Quiz: 2) NEET Biology Questions & Answers with Detailed Explanation & Full Review

Question-1

In DNA when AGCT occurs, their association is as per which of the following pair?

(a) AG-CT

(b) AC-GT

(c) AT-GC

(d) All of these

Question-2

DNA-dependent RNA polymerase catalyses transcription on one strand of the DNA which is called the

(a) coding strand

(b) template strand

(c) alpha strand

(d) antistrand

Question-3

Many ribosomes may associate with a single mRNA to form multiple copies of a polypeptide simultaneously. Such strings of ribosomes are termed as

(a) polyhedral bodies

(b) plastidome

(c) polysome

(d) nucleosome

Question-4

Frame shift mutation occurs when

(a) base is added.

(b) base is deleted or added.

(c) base is deleted.

(d) anticodons are not present.

Question-5

Out of the 3 structural genes z, y and a, the gene (s) which gene of E. coli lac Operon code for permease?

(a) s

(b) z

(c) y

(d) Both (a) and (c)

Question-6

Which one of the following hydrolyses internal phosphodiester bonds in a polynucleotide chain?

(a) Endonucleare

(b) Lipase

(c) Endonuclease

(d) Protease

Question-7

Identify the incorrect statement.

(a) In eukaryotes, structural genes have interrupted coding sequences.

(b) In prokaryotes, the structural gene is polycistronic.

(c) Eukaryotes have split gene arrangement.

(d) Intervening sequences appear in mature RNA.

Question-8

An octamer of 4 histones complexed with DNA forms

(a) nucleosome

(b) endosome

(c) mesosome

(d) centromere

Question-9

Change in sequence of nucleotide in DNA is called as

(a) mutation

(b) mutagen

(c) recombination

(d) translation.

Question-10

A bacteriophage φ × 174 has

(a) 5683 nucleotides

(b) 5836 base pairs

(c) 5386 nucleotides

(d) 5638 base pairs