MCQ Questions for Class 12 Biology Chapter 6 Molecular Basis of Inheritance with Answers Set-C

Molecular Basis of Inheritance Class 12 Biology MCQs Questions with Answers

Check the below NCERT MCQ Questions for Class 12 Biology Chapter 6 Molecular Basis of Inheritance with Answers Pdf free download. MCQ Questions for Class 12 Biology with Answers were prepared based on the latest exam pattern. We have Provided Molecular Basis of Inheritance Class 12 Biology MCQs Questions with Answers to help students understand the concept very well.

Class 12 Biology Chapter 6 Quiz

Class 12 Biology Chapter 6 MCQ Online Test

You can refer to NCERT Solutions for Class 12 Biology Chapter 6 Molecular Basis of Inheritance to revise the concepts in the syllabus effectively and improve your chances of securing high marks in your board exams.

Molecular Basis of Inheritance Class 12 Biology MCQ online test

Q1.	Chemically, RNA is (i) reactive and (ii) stable as compared to DNA.
	A.(i) equally, (ii) equally
	B.(i) less, (ii) more
	C.(i) more, (ii) less
	D.(i) more, (ii) equally

Ans: (i) more, (ii) less

Q2.	Which of the following phenomena was experimentally proved by Meselson and Stahl ?
	A.Transformation
	B.Transduction
	C.Semi-conservative DNA replication
	D.Central dogma

Ans: Semi-conservative DNA replication

Q3.	First experimental proof for semi-conservative DNA replication was shown in
	A.Streptococcus pneumoniae
	B.Escherichia coli
	C.Neurospora crassa
	D.Rattus rattus.

Ans: Escherichia coli

Q4.	Select the correct match of enzyme with its related function.
	A.DNA polymerase – Synthesis of DNA strands
	B.Helicase – Unwinding of DNA helix
	C.Ligase – Joins together short DNA segments
	D.All of these

Ans: All of these

Q5.	Other than DNA polymerase, which are the enzymes involved in DNA synthesis ?
	A.Topoisomerase
	B.Helicase
	C.RNA primase
	D.All of these

Ans: All of these

Q6.	DNA replication takes place at _________ phase of the cell cyle.
	A.G₁
	B.S
	C.G₂
	D.M

Ans: S

Q7.	The process of copying genetic information from one strand of DNA to RNA is termed as _________ .
	A.replication
	B.transcription
	C.translation
	D.reverse transcription

Ans: transcription

Q8.	The enzyme DNA dependent RNA polymerase catalyses the polymerisation reaction in ___________direction.
	A.only 5’ → 3’
	B.only 3’ → 5’
	C.both (a) and (b)
	D.none of these

Ans: only 5’ → 3’

Q9.	If the sequence of bases in coding strand of DNA is ATTCGATG, then the sequence of bases in mRNA will be
	A.TAAGCTAC
	B.UAAGCUAC
	C.ATTCGATG
	D.AUUCGAUG.

Ans: AUUCGAUG.

Q10.	If the sequence of bases in DNA is GCTTAGGCAA then the sequence of bases in its transcript will be
	A.GCTTAGGCAA
	B.CGAATCCGTT
	C.CGAAUCCGUU
	D.AACGGAUUCG.

Ans: CGAAUCCGUU

Q11.	Transcription unit
	A.starts with TATA box
	B.starts with pallendrous regions and ends with rho factor.
	C.starts with promoter region and ends in terminator region
	D.starts with CAAT region.

Ans: starts with promoter region and ends in terminator region

Q12.	During transcription, the site of DNA molecule at which RNA polymerase binds is called
	A.promoter
	B.regulator
	C.receptor
	D.enhancer.

Ans: promoter

Q13.	Polycistronic messenger RNA (mRNA) usually occurs in
	A.bacteria
	B.prokaryotes
	C.eukaryotes
	D.both (a) and (b)

Ans: both (a) and (b)

Q14.	In transcription in eukaryotes, heterogenous nuclear RNA (hnRNA) is tmascribed by
	A.RNA polymerase I
	B.RNA polymerase II
	C.RNA poly merase II
	D.all of these.

Ans: RNA polymerase II

Q15.	Methyl guanosine triphosphate is added to the 5’ end of hnRNA in a process of
	A.splicing
	B.capping
	C.tailing
	D.none of these

Ans: capping

Q16.	In eukaryotes, the process of processing of primary transcript involves
	A.removal of introns
	B.capping at 5’end
	C.tailing (polyadenlation) at 3’ end
	D.all of these.

Ans: capping at 5’end

Q17.	In a n/RNA molecule, untranslated regions (UTRs) are present at
	A.5’ – end (before start codon)
	B.3’ – end (after stop codon)
	C.both (a) and (b)
	D.3’- end only.

Ans: both (a) and (b)

Q18.	UTRs are the untranslated regions present on
	A.rRNA
	B.hnRNA
	C.mRNA
	D.hnRNA.

Ans: mRNA

Q19.	Which of the following statements is correct regarding ribosomes ?
	A.Most of a cell’s DNA molecule are stored there.
	B.Complete polypeptide is released from there.
	C.mRNAs are produced there.
	D.DNA replication takes place there.

Ans: Complete polypeptide is released from there.

Q20.	Regulation of gene expression occurs at the level of
	A.transcription
	B.processing/splicing
	C.translation
	D.all of these.

Ans: all of these.

MCQ Questions for Class 12 Biology

NCERT Solutions for Class 12 Biology

Class 12 Biologys

NCERT SOLUTIONS FOR CLASS 12

MCQ Questions for Class 12 Biology Chapter 6 Molecular Basis of Inheritance with Answers

MCQ Questions for Class 12 Biology Chapter 6 Molecular Basis of Inheritance with Answers Set-C

Molecular Basis of Inheritance Class 12 Biology MCQs Questions with Answers

Class 12 Biology Chapter 6 Quiz

Class 12 Biology Chapter 6 MCQ Online Test

Molecular Basis of Inheritance Class 12 Biology MCQ online test

MCQ Questions for Class 12 Biology

NCERT Solutions for Class 12 Biology

Class 12 Biologys

NCERT Solutions for Class 12 Biology

NCERT Solutions for Class 12 Biology

Class 12 Biology

Class 12 Biology

Class 12 Biology

Class 12 Biology

Biology : Class 12

Biology : Class 12

NCERT Biology Class 12

NCERT Biology Class 12

NCERT Bio Class 12

NCERT Bio Class 12

12th NCERT Biology

12th NCERT Biology

Class 12 Biology Chapters

Class 12 Biology Chapters

MCQ QUESTIONS WITH ANSWER

NCERT SOLUTIONS FOR CLASS 12

Post a Comment

Post a Comment

Contact Form