MCQs on Structure of RNA
1. Which of the following enzymes is non-proteinaceous?
(a) deoxyribonuclease
(b) ligase
(c) ribozyme
(d) lysozyme
Answer: : (c)
2. RNA contains Uridine, it is a
(a) pyrimidine
(b) purine
(c) nucleotide
(d) nucleoside
Answer: : (d)
3. Anticodon is present in
(a) DNA
(b) tRNA
(c) rRNA
(d) mRNA
Answer: : (b)
4. Which of the following purine bases is present in RNA?
(a) Uracil
(b) Thymine
(c) Cytosine
(d) Guanine
Answer: : (d)
5. Which of the following is found more widely in a cell?
(a) RNA
(b) DNA
(c) Sphaerosomes
(d) Chloroplasts
Answer: : (a)
6. RNA contains repeating units of
(a) deoxyribonucleotides
(b) ribonucleotides
(c) deoxyribonucleosides
(d) ribonucleosides
Answer: : (b)
7. Which of the following rRNAs in bacteria acts as a ribozyme as well as structural RNA?
(a) 23S rRNA
(b) 18S rRNA
(c) 5.8S rRNA
(d) 5S rRNA
Answer: : (a)
8. Which of the following RNAs are the most abundant in an animal cell?
(a) mRNA
(b) tRNA
(c) miRNA
(d) rRNA
Answer: : (d)
9. A single strand of mRNA attached to complex of ribosomes is called
(a) Okazaki fragments
(b) polymer
(c) polysome
(d) polypeptide
Answer: : (c)
10. Which of the following RNAs’ structure is similar to clover leaf?
(a) tRNA
(b) rRNA
(c) mRNA
(d) hnRNA
Answer: : (a)
