Structure Of DNA & RNA Objective Type Questions And Answers

11. The technique involved in comparing the DNA components of two samples is known as
a. Monoclonal antibody techniques
b. Genetic finger printing
c. Recombinant DNA technology
d. Polymerase chain reaction
Ans: B

12. Plasmids are ideal vectors for genecloning as
a. They can be multiplied by culturing
b. They can be multiplied in the laboratory using enzymes
c. They can replicate freely outside the bacterial cell
d. They are self replicating within the bacterial cell
Ans: D

13. Humans normally have 46 chromosomes in skin cells. How many autosomes would be expected in a kidney cell?
a. 46
b. 23
c. 47
d. 44
Ans: D

14. Pasteur effect is due to
a. Change from aerobic to anaerobic
b. Providing oxygen to anaerobically respiring structures
c. Rapid utilization of ATP
d. Nonsynthesis of ATP
Ans: B

15. A mechanism that can cause a gene to move from one linkage group to another is
a. Trans location
b. Inversion
c. Crossing over
d. Duplication
Ans: A

16. The smallest unit of genetic material that can undergo mutation is called
a. Gene
b. Cistron
c. Replicon
d. Muton
Ans: D

17. The two chromatids of metaphase chrosome represent
a. Replicated chromosomes to be separated at anaphase
b. Homologous chromosomes of a diploid set
c. Non-homologous chromosomes joined at the centromere
d. Maternal and paternal chromosomes joined at the centromere
Ans: A

18. Malate dehydrogenase enzyme is a
a. Transferase
b. Hydrolase
c. Isomerase
d. Oxido reductase
Ans: D

19. In E.Coli att site is in between
a. Gal and biogenes
b. Bio and niacin genes
c. Gal and B genes
d. None of these
Ans: A

20. The best vector for gene cloning
a. Relaxed control plasmid
b. Stringent control plasmid
c. Both a and b
d. None of these
Ans: A

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