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Home Biochemistry RNA Structure Comments

  • Question
  • The anticodon is a structure on


  • Options
  • A. mRNA.
  • B. tRNA.
  • C. aribosome.
  • D. rRNA.

  • Correct Answer
  • tRNA. 


  • RNA Structure problems


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    • 1. What is the function of messenger RNA?

    • Options
    • A. It carries amino acids
    • B. It is a component of the ribosomes
    • C. It is a direct copy of a gene
    • D. It is the genetic material of some organisms
    • Discuss
    • 2. Which of following RNA characteristically contains unusual purines and pyrimidmes?

    • Options
    • A. rRNA
    • B. nRNA
    • C. mRNA
    • D. tRNA
    • Discuss
    • 3. Retroviruses replicate via __________ intermediate

    • Options
    • A. RNA
    • B. DNA
    • C. mRNA
    • D. rDNA
    • Discuss
    • 4. What bands will be observed in a cesium chloride gradient after two rounds of replication?

    • Options
    • A. One light, one medium and one heavy band
    • B. One light and one medium band
    • C. One medium band
    • D. One medium and one heavy band
    • Discuss
    • 5. Taylor, Woods and Hughes labeled Vicia DNA by allowing new DNA synthesis in the presence of radioactive thymine. After DNA replication (S phase of the cell cycle), it was observed that

    • Options
    • A. only one chromatid of a chromosome was labeled
    • B. both chromatids of a chromosome were labeled
    • C. both (a) and (b)
    • D. neither chromatid was labeled
    • Discuss
    • 6. What modified base is at the 5' extremity of a capped eukaryotic m-RNA?

    • Options
    • A. 1-methyl-adenosine
    • B. 2'-O-methyl-guanosine
    • C. 7-methyl-guanosine
    • D. 1-methyl-guanosine
    • Discuss
    • 7. A nicked RNA molecule can be ligated by

    • Options
    • A. T4 RNA ligase
    • B. DNA polymerase
    • C. T4 DNA ligase
    • D. all of these
    • Discuss
    • 8. The genetic material of retroviruses such as HIV is

    • Options
    • A. DNA
    • B. RNA
    • C. protein
    • D. all of these
    • Discuss
    • 9. RNA instability in alkaline solutions is due to

    • Options
    • A. adenine
    • B. ribose
    • C. uracil
    • D. single strand nature
    • Discuss
    • 10. Two features of the tRNA molecule associated, in converting the triplet codon to an amino acid, are

    • Options
    • A. in the T Loop and D stem and loop
    • B. in the anticodon loop and D stem loop
    • C. in the anticodon loop and the 3' CCA end
    • D. none of the above
    • Discuss


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