Free Molecular Basis Of Inheritance (Weekly Quiz: 1) NEET Biology Questions & Answers with Detailed Explanation & Full Review

Question-1

A sequential expression of a set of human genes occurs when a steroid molecule binds to the

(a) messenger RNA

(b) transfer RNA

(c) DNA sequence

(d) ribosome

Question-2

The average rate of polymerization of deoxyribonucleotides in E. coli DNA replication process is

(a) 2000 bp/s

(b) 2500 bp/s

(c) 3000 bp/s

(d) 3500 bp/s

Question-3

Other than DNA polymerase, which is/ are the enzyme(s) involved in DNA synthesis?

(a) RNA primase

(b) Helicase

(c) Topoisomerase

(d) All of these

Question-4

Which one of the following triplet codes, is correctly matched with its specificity for an amino acid in protein synthesis or as 'start' or 'stop' codon ?

(a) UAC—Tyrosine

(b) UGU—Leucine

(c) UCG—Start

(d) UUU—Stop

Question-5

If the sequence of bases in DNA is ATTCGATG, then the sequence of bases in its transcript will be

(a) AUUCGAUG

(b) GUAGCUUA

(c) CAUCGAAU

(d) UAAGCUAC

Question-6

Which one of the following statements about the particular entity is true ?

(a) The gene for producing insulin is present in every body cell.

(b) Centromere is found in animal cells, which produces aster during cell division.

(c) Nucleosome is formed of nucleotides.

(d) DNA consists of core of eight histones.

Question-7

To initiate translation, the mRNA first binds to

(a) the larger ribosomal subunit

(b) the smaller ribosomal subunit

(c) the whole ribosome

(d) No such specificity exists

Question-8

Change in sequence of nucleotide in DNA is called

(a) mutation

(b) mutagen

(c) recombination

(d) translation

Question-9

Both deoxyribose and ribose belong to a class of sugars called

(a) hexoses

(b) Trioses

(c) Pentoses

(d) Polysaccharides

Question-10

What is indicated by 'c' in the figure?

(a) $^{32}S$

(b) $^{35}S$

(c) $^{30}P$

(d) $^{32}P$