Ribonucleic acid is a polymer of ribonucleotides linked together by a phosphodiester linkage. RNA was the first genetic material. Usually, it is single-stranded and helical in structure.RNA exists in several different single-stranded structures, most of them are directly or indirectly involved in protein synthesis or its regulation. So take this quiz and know more about RNA and its structure.
1. Which one of the following is the first one that shows RNA has catalytic functions?
A. Tom Cech
B. Watson
C. Carl Woese
D. None of these
2. RNA acts as the genetic material in some ....
A. Fungi
B. Human being
C. Viruses
D. Animals
3. Nucleotides are formed by the condesation of a ...
A. Sugar
B. Phosphate
C. One of the 4 bases
D. All of these
4. dsRNA has an .....conformation.
A. A-like
B. B-like
C. C-like
D. D-like
5. In mammalian nuclei, which RNA is the immediate product of gene transcription?
A. snRNA
B. miRNA
C. m-RNA
D. hnRNA
6. What is the percentage of hnRNA is degraded in the nucleus?
A. 50%
B. 75%
C. 25%
D. 30%
7. Which one of the following is the smallest RNA of three major species of RNA?
A. m-RNA
B. r-RNA
C. t-RNA
D. None of these
8.
Which of the following also called Adapter molecule?
A. t-RNA
B. m-RNA
C. r-RNA
D. hnRNA
9. Name the species of RNA that contains the nucleoside thymidine?
A. m-RNA
B. r-RNA
C. t-RNA
D. snRNA
10. Which one of the following is essential for protein synthesis in all living organisms?
A. m-RNA
B. r-RNa
C. snRNA
D. hnRNA
11. miRNA and siRNA regulate ....
A. Gene Mutation
B. Capping
C. Splicing
D. Gene expression
12. Which one of the following directs the modification of ribosomal RNAs?
A. Small nuclear RNA
B. Small nucleolar RNA
C. Micro RNA
D. None of these
13. Which one of the following is involved in mRNA splicing?
A. snRNA
B. snoRNA
C. miRNA
D. All of the above
Drop your comment here...
