Molecular Basis of Inheritance MCQs | Molecular Basis of Inheritance GK Questions and Answers

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Questions
1 What is the name of process of addition of methyl guanosine triphosphate at the 5’ end of hn RNA?
A Splicing
B Capping
C Tailing
D None of these

Answer:Capping
2 Find out the wrong pair/s?
1. rRNA- RNA polymerase I
2. tRNA- RNA polymerase II
3. mRNA-RNA polymerase III
A Both 1 & 2
B Both 2& 3
C Only 1
D Only 2

Answer: Both 2& 3
3 Who proposed base pairing rules of DNA?
A James Watson
B Erwin Chargaff
C Francis Crick
D Frederic Griffith

Answer: Erwin Chargaff
4 Find out the incorrect pair
1. β- galactosidase – produces by z-gene
2. Permease – produces by y-gene
3. Transacetylase – produces by a-gene
A 1 & 2
B 2 & 3
C All the statements
D None of the statements

Answer:None of the statements
5 What is the length of DNA having 75 base pairs?
A 255A0
B 112.5 A0
C 750 A0
D All of these

Answer: 112.5 A0
6 Which amino acids are present mostly in histone?
A Arginine & Glycine
B Glycine & Lysine
C Arginine & Lysine
D Arginine & Valine

Answer:Arginine & Lysine
7 During tailing which molecule is added at the 3’ and of hnRNA?
A Poly adenylate residue
B Methyl guanosine tri phosphate
C Methyl guanosine di phosphate
D Adenosine monophosphate

Answer: Poly adenylate residue
8 Which type of histones interconnect two adjacent nucleosomes?
A H1& H2A
B H2A & H2B
C H1 only
D H3 & H2A

Answer:H1 only
9 Who discovered Lac operon?
A Jacob & Monod
B Jacob & Watson
C Watson & Monod
D Crick & Monod

Answer:Jacob & Monod
10 Which is the largest gene in Man?
A Dystrophin
B Dystronin
C Dystromin
D Dystropin

Answer:Dystrophin
11 What were the experimental materials used by Griffith to prove that DNA is the genetic material?
A E-coli & Streptococcus pneumonia
B Mice & Staphylococcus pneumonia
C Mice, Streptococcus pneumonia & Staphylococcus pneumonia
D None of these

Answer:Mice, Streptococcus pneumonia & Staphylococcus pneumonia
12 Which enzyme unwinds DNA double helix during DNA replication?
A Topoisomerase
B Helicase
C SSB protein
D DNA polymerase

Answer: Helicase
13 Who experimentally proved that DNA is the genetic material?
A Meselson& Chase
B Hershey & Chase
C Hershey & Meselson
D Watson & Chase

Answer: Hershey & Chase
14 Which codons are stop codons
A UAA,UGC & UCG
B UAA,UGA& UAG
C UAA,UGC & UGA
D UAA,UAG & UCG

Answer: UAA,UGA& UAG
15 Which amino acids are coded by the genetic codes GAG & GUG respectively
A Glutamic acid & Glutamic acid
B Glutaric acid & Valine
C Glutaric acid & Proline
D Glutamic acid & Valine

Answer:Glutamic acid & Valine
16 The special unwinding enzyme that helps in breaking the weak hydrogen bond which hold the two strands of DNA is
A Primase
B DNA ligase
C DNA polymerase
D Helicase

Answer:Helicase
17 Transfer of DNA from one bacteria to another through cell to cell contact is known as
A Conjugation
B Transformation
C Transduction
D Transcription

Answer:Transformation
18 The four nitrogen base sequence which form the code words for DNA Language is
A UTAC
B ACTU
C AGCU
D ATCG

Answer:ATCG
19 DNA strands are antiparallel because of the presence of
A H-bonds
B Peptide bonds
C Di sulphide bonds
D Phospho diester bonds

Answer: Phospho diester bonds
20 Transformation experiments using pneumococcus bacteria led to the hypothesis that
A RNA is the transfer link between DNA and protein synthesis
B Chromosomes are made up of DNA
C DNA is genetic substance
D Bacteria has sexual reproduction

Answer: Chromosomes are made up of DNA

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