Common Structure Of DNA & RNA Objective Type Questions And Answers

31. Peptide linkages are formed in between
a. Nucleotides
b. Amino acids
c. Glucose molecules
d. Sucrose
Ans: B

32. The nucleic acid of polio viruses is
a. DNA
b. RNA – (+) type
c. t-RNA
d. m-RNA
Ans: B

33. Rabies virus is
a. Nake RNA virus
b. Naked DNA virus
c. Enveloped RNA virus
d. Enveloped DNA virus
Ans: C

34. Example for DNA virus:
a. Polio virus
b. Adeno virus
c. Echo virus
d. Poty virus
Ans: B

35. In genetic engineering breaks in DNA are formed by enzymes known as
a. Restriction enzymes
b. Ligases
c. Nucleases
d. Hydralases
Ans: B

36. DNA transfer from one bacterium to another through phages is termed as
a. Transduction
b. Induction
c. Transfection
d. Infection
Ans: A

37. Microorganisms usually make acetyl CO-A by oxidizing
a. Acetic acid
b. Pyruvic acid
c. a-ketoglutaric acid
d. Fumaric acid
Ans: A

38. The method of DNA replication proposed by Watson and Crick is
a. Semi conservative
b. Conservative
c. Dispersive
d. Rolling loop
Ans: A

39. The distance between each turn in the helical strand of DNA is
a. 20 Ao
b. 34 Ao
c. 28 Ao
d. 42 Ao
Ans: B

40. Self-replicating, small circular DNA molecules present in bacterial cell are known
a. Plasmids
b. Cosmids
c. Plasmomeros
d. plastides
Ans: A

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