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Biochemistry Mcqs

Iron absorption is decreased in presence of all except____________?

  • (A)  Phytates
  • (B)  Ascorbic acid
  • (C)  Tannins
  • (D)  Phosphates
Submitted By :Ali Uppal


The sigma subunit of prokaryotic RNA polymerase_______________?

  • (A)  Binds the antibiotic Rifampicin
  • (B)  Is inhibited by a-amanitin
  • (C)  Specifically recognizes the promoter site
  • (D)  Is part of the core enzyme
Submitted By :Ali Uppal


Submitted By :Ali Uppal


Ammonia produced by brain is trapped as_____________?

  • (A)  Urea
  • (B)  Uric Acid
  • (C)  Creatinine
  • (D)  Glutamine
Submitted By :Ali Uppal


Serum creatine kinase-3 (CK-3) is elevated in_______________?

  • (A)  Muscular dystrophy
  • (B)  Myocardial infarction
  • (C)  Alcoholic cirrhosis
  • (D)  Brain tumours
Submitted By :Ali Uppal


Transcription is the synthesis of____________?

  • (A)  Single stranded complimentary copy of DNA
  • (B)  Double stranded complimentary copy of DNA
  • (C)  Complimentary copy of RNA
  • (D)  COmplimentary copy of rRNA
Submitted By :Ali Uppal


Which of the following is used in recombinant DNA technology ?

  • (A)  Restriction endonucleases
  • (B)  PCR
  • (C)  Reverse transcriptase FISH
  • (D)  None of these
Submitted By :Ali Uppal


Denaturation of double stranded DNA involves_______________?

  • (A)  It gets broken down to nucleotides
  • (B)  It becomes single stranded reversibly
  • (C)  It becomes single stranded irreversibly
  • (D)  It becomes double stranded irreversibly
Submitted By :Ali Uppal


DNA double helix is bound by_____________?

  • (A)  Covalent bond
  • (B)  Hydrogen bond
  • (C)  Disulfide linkage
  • (D)  Vander wall forces
Submitted By :Ali Uppal


Genes are_____________?

  • (A)  Ribonucleic acid
  • (B)  Deoxy ribonucleic acid
  • (C)  Lipoproteins
  • (D)  Chromo proteins
Submitted By :Ali Uppal