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MCQs

Total Questions : 15 | Page 1 of 2 pages
Question 1. The tertiary structure of yeast tRNA
  1.    resembles the 3-dimensional structure of other tRNAs
  2.    involves extensive base stacking interactions
  3.    is maintained mostly by non-Watson-Crick base pairing
  4.    All of these
 Discuss Question
Answer: Option D. -> All of these
Question 2. The genetic material of retroviruses such as HIV is
  1.    protein
  2.    all of these
  3.    DNA
  4.    RNA
 Discuss Question
Answer: Option D. -> RNA
Question 3. A nicked RNA molecule can be ligated by
  1.    all of these
  2.    T4 RNA ligase
  3.    DNA polymerase
  4.    T4 DNA ligase
 Discuss Question
Answer: Option D. -> T4 DNA ligase
Question 4. The anticodon is a structure on
  1.    aribosome.
  2.    rRNA.
  3.    tRNA.
  4.    mRNA.
 Discuss Question
Answer: Option C. -> tRNA.
Question 5. Which of following RNA characteristically contains unusual purines and pyrimidmes?
  1.    rRNA
  2.    mRNA
  3.    nRNA
  4.    tRNA
 Discuss Question
Answer: Option D. -> tRNA
Question 6. Retroviruses replicate via __________ intermediate
  1.    rDNA
  2.    mRNA
  3.    RNA
  4.    DNA
 Discuss Question
Answer: Option D. -> DNA
Question 7. Two features of the tRNA molecule associated, in converting the triplet codon to an amino acid, are
  1.    in the T Loop and D stem and loop
  2.    in the anticodon loop and D stem loop
  3.    in the anticodon loop and the 3' CCA end
  4.    None of these
 Discuss Question
Answer: Option C. -> in the anticodon loop and the 3' CCA end
Question 8. In RNA, uracil pairs with
  1.    thymine
  2.    cytosine
  3.    adenine
  4.    guanine
 Discuss Question
Answer: Option C. -> adenine
Question 9. During RNA synthesis, the DNA template sequence 5'Tp Ap Gp Cp 3' Would be transcribed to produce which of the following RNA sequence?
  1.    5'-Ap Tp Cp Gp-3'
  2.    5'-Ap Up Cp Gp-3'
  3.    5'-Gp Cp Tp Ap-3'
  4.    5'-Gp Cp Up Ap-3'
 Discuss Question
Answer: Option D. -> 5'-Gp Cp Up Ap-3'
Question 10. RNA instability in alkaline solutions is due to
  1.    uracil
  2.    single strand nature
  3.    adenine
  4.    ribose
 Discuss Question
Answer: Option D. -> ribose

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