Molecular Basis of Inheritance: MCQs Quiz – 2 8


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Solve a free online interactive MCQs test on ‘Molecular basis of Inheritance’ with instant answers and reporting. Test # 02

Molecular Basis of Inheritance: MCQs Quiz - 2

Congratulations - you have completed Molecular Basis of Inheritance: MCQs Quiz - 2. You scored %%SCORE%% out of %%TOTAL%%. Your performance has been rated as %%RATING%%
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Question 1
DNA is a polymer made of ______.
A
Amino acids
B
Fats
C
Sugars
D
Nucleotides
Question 2
______ occurs in RNA instead of the nitrogenous base thymine found in DNA.
A
Uracil
B
Cytosine
C
Guanine
D
Ribose
Question 3
Chromosome is made up of
A
DNA + pectin
B
RNA + DNA
C
DNA + Histone
D
Only histone
Question 4
The region of tRNA which consists of three bases complementary to a mRNA codon is ______.
A
Codon
B
Intron
C
Anticodon
D
Interferon
Question 5
A DNA segment which serves as a kind of “on-off switch” for transcription is a/an ______.
A
Regulator gene
B
Operator
C
Promoter
D
Structural gene
Question 6
Mitochondria are semi autonomous as they possess
A
DNA
B
DNA + RNA
C
DNA + RNA Ribosomes
D
Protein
Question 7
RNA has the sugar ______, instead of deoxyribose.
A
Fructose
B
Ribose
C
Sucrose
D
Deoxyribose
Question 8
There is no DNA in
A
Hair root
B
An enucleated ovum
C
Mature RBCs
D
A mature spermatozoan
Question 9
The Segments of DNA, capable of moving from one location to another are
A
Introns
B
Transposons
C
Exons
D
Operons
Question 10
Match the followings:
A tRNA 1 Linking of amino acids
B mRNA 2 Transfer of genetic information
C rRNA 3 Nucleolar organising region
D Peptidyl transferase 4 Transfer of amino acid from cytoplasm of ribosome
 
A
A = 4, B = 2, C = 3, D = 1
B
A = 1, B = 4, C = 3, D = 2
C
A = 1, B = 2, C = 3, D = 4
D
A = 1, B = 3, C = 2, D = 4
Question 11
______ catalyzes the formation of RNA on a DNA template and capable of binding to a promoter.
A
DNA polymerase
B
Helicase
C
DNA lipase
D
RNA polymerase
Question 12
Gel electrophoresis is used for
A
Isolation of DNA molecule
B
Cutting of DNA into fragments
C
Separation of DNA fragments according to their size
D
Construction of recombinant DNA by joining with cloning vectors
Question 13
The anti-parallel nature of DNA refers to
A
Its charged phosphate groups
B
The formation of hydrogen bonds between bases from opposite strands
C
The opposite direction of the two strands
D
The pairing of bases on one strand with bases on the other strand
Question 14
Beadle and Tatum showed that each kind of mutant bread mould they studied lacked a specific enzyme. Their experiments demonstrated that
A
Cells need specific enzymes in order to function
B
Genes are made of DNA
C
Enzymes are required to repair damage
D
Genes carry information for making proteins
Question 15
What is antisense technology?
A
RNA polymerase producing DNA
B
A cell displaying a foreign antigen used for synthesis of antigens
C
Production of somaclonal variants in tissue cultures
D
When a piece of RNA that is complementary in sequence is used to stop expression of a specific gene
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8 thoughts on “Molecular Basis of Inheritance: MCQs Quiz – 2

  • Rajeswari

    Sir,in question 14-isnt it one gene one enzyme hypothesis?

  • asma

    nice questions.sir can you explain me ques no 04. Thankyou

    • shivam

      the question four which you asked to explain the meaning is that tRNA consists of three base and mRNA codon is anticodon so we can easily say that tRNA used for transfer thats why it contaion three base and mRNA is use only for anti codon now u got ur answer

      • somdatta ganguly

        the region is cald anticodon..trna has got an anticodon loop which attaches d complementary codons of the particular codons of the required amino acid.. wenevr an amino acid gets attached to the amino acid atachment site of trna tht actualy means tht the requird triplet codon is there in ribosome which codes for tht particular amino acid of which the complementary base pairs are need to b attached to the anticodon loop the trna.. tht is why its cald an anticodon loop.. i hope its clear to u asma.. i gues shivam knws the reasn bt d way he wrote actualy confuses the thng more..:( sorry shivam.. bt al d best dear:):)

    • mayank

      codons r the that units which codes for A.ACID.complementary TO Mrna sequence it is called anti codon. eg. AUG Has anticodon UAC on trna

      • Keerthan

        DNA – code
        mRNA – codon
        tRNA – anticodon