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Biochemistry Mcqs

Restriction endonuclease cleaves______________?

  • (A)  Double stranded DNA
  • (B)  SIngle stranded DNA
  • (C)  SIngle stranded RNA
  • (D)  Polypeptide
Submitted By :Ali Uppal


Which of the following process in involved in conversion of DNA to RNA___________?

  • (A)  Conjugation
  • (B)  Transduction
  • (C)  Translocation
  • (D)  Transcription
Submitted By :Ali Uppal


Unwinding of DNA is done by____________?

  • (A)  DNAse
  • (B)  Topo isomerase
  • (C)  Ligase
  • (D)  Reverse transcriptase
Submitted By :Ali Uppal


Nonsense codons bring about__________________?

  • (A)  Elongation of polypeptide chain
  • (B)  Pre-translational modification of protein
  • (C)  Initiation of protein synthesis
  • (D)  Termination of protein synthesis
Submitted By :Ali Uppal


The initiation codon for protein synthesis is_____________?

  • (A)  AUG
  • (B)  UAA
  • (C)  UUU
  • (D)  UAG
Submitted By :Ali Uppal


Mutations are due to changes in_________________?

  • (A)  DNA nucleotide sequence
  • (B)  RNA nucleotide sequence
  • (C)  Amino acid sequence of ribonuclease
  • (D)  Cell walls
Submitted By :Ali Uppal


Kinase requires_______________?

  • (A)  MN++
  • (B)  Cu++
  • (C)  Mg++
  • (D)  Inorganic phosphate
Submitted By :Ali Uppal


Highest binding of iron in plasma is seen with___________?

  • (A)  Transferrin
  • (B)  Ferritin
  • (C)  Hemoglobin
  • (D)  Ceruloplasmin
Submitted By :Ali Uppal


Which of the following is not a post transcriptional modification of RNA ?

  • (A)  Splicing
  • (B)  5′ capping
  • (C)  3′ polyadenylation
  • (D)  Glycosylation
Submitted By :Ali Uppal


The protein rich in basic amino acids, which functions in the packaging of DNA is chromosomes is______________?

  • (A)  Histone
  • (B)  Collagen
  • (C)  Hyaluronic acid binding protein
  • (D)  Fibrinogen
Submitted By :Ali Uppal