JOIN ADRE 2.0 Telegram Group

Molecular Basis of Inheritance MCQs | Molecular Basis of Inheritance Objective Type Questions with Answers

Questions
1 Type I topoisomerase can never decatenate catenated circular DNA?
A True
B False

Answer:False
2 The promotion of DNA breaking and rejoining by topoisomerase requires______________
A High – energy cofactor
B Ligase
C DNase I
D No external enzyme required

Answer: No external enzyme required
3 Attack of the topoisomerase gives rise to ____________
A Hydroxy – valine linkage
B Phospho – tyrosine linkage
C Hydroxy – cystine linkage
D Phospho – proline linkage

Answer:Phospho – tyrosine linkage
4 To reseal the DNA backbone where does topoisomerase gets the energy from?
A ATP hydrolysis
B High energy cofactor
C Phosphodiester cleavage
D Phosphotyrosine cleavage

Answer:Phosphodiester cleavage
5 Which of the following does not occur during cell division in prokaryotes?
A Multiple decatenations
B DNA cleavage
C DNA rejoining
D Strand passage

Answer: Multiple decatenations
6 The active site of the topoisomerase contains a tyrosine residue.
A True
B False

Answer:True
7 Nucleosome was first described in 1974 by ___________
A William Asbury
B Rosalind Franklin
C Roger Kornberg
D John Crick

Answer:Roger Kornberg
8 The extent of chromosome coiling in non – dividing cells is _________
A Supercoiled
B Euchromatin
C Condensed
D Heterochromatin

Answer:Euchromatin
9 The whole length of DNA is transcriptionally active.
A True
B False

Answer:False
10 Why are chromosomes condensed?
A To facilitate accommodation
B Always condensed
C To facilitate cell division
D To facilitate distribution in daughter cells

Answer:To facilitate distribution in daughter cells
11 At which phase do transcription ceases?
A Interphase
B Prophase
C S phase
D G phase

Answer:Prophase
12 The part that plays a critical role in even distribution of parental DNA during division is ___________
A Telomere
B Centromere
C Spindle fibre
D Centrioles

Answer: Centromere
13 With respect to centromere which of the following is wrong?
A Constricted chromosomal region
B Holds the sister chromatids together
C Attaches to spindle fibres
D Facilitates even distribution

Answer: Facilitates even distribution
14 The protein that binds to the spindle fibres are known as centromeric proteins.
A True
B False

Answer: False
15 Centromeric DNA was initially defined in ___________
A Bacteria
B Fungi
C Yeast
D Human

Answer:Yeast
16 How many satellite sequence elements are present in yeast centromere?
A 2
B 3
C 4
D 5

Answer:3
17 The centromere is A/T rich region.
A True
B False

Answer:True
18 Which alternate form of histone is seen in centromeric histones of humans?
A H2A.z
B SMC protein
C H1
D CENP-A

Answer:CENP-A
19 Telomere is not related to __________
A Maintenance
B Chromosome degradation
C Division
D Replication

Answer: Division
20 Which of the following nucleotides is rich I telomere of an organism?
A A, T
B T, G
C G, C
D C, A

Answer: G, C

ADRE 2.0 FULL LENGTH MOCK TEST

Take Mock Tests

Missiles Mock Test Start Test!
SSC MTS Mock Test Start Test
IBPS CLERK MOCK TEST Start Test
SSC MTS 2022 JULY 26 Shift 1 (ENGLISH) Start Test!
SSC GD Previous Year Paper 2021 Nov 17 Shift - I (Hindi) Start Test!
SSC CGL Tier - 1 PYP 2022 April 21 Shift- 1 (ENGLISH) Start Test!
MPSC PAPER I MOCK TEST 1 (ENGLISH) Start Test!
IB Security Assistant Mock test 1 (english) Start Test!
UP POLICE CONSTABLE MOCK TEST 1 Start Test!
DELHI POLICE CONSTABLE MOCK TEST 1 (HINDI) Start Test!
Advertisement
Assam Direct Recruitment Test Series