191. Watson and Crick are famous for their discovery of
(A) Structure of DNA
(B) Antibodies
(C) Life history of Plasmodium Vivax
(D) Vaccinia.
192. The well-known antibiotic penicillin is obtained from this plant group:
(A) Lichen
(B) Angiosperm
(C) Algae
(D) Fungi.
193. RNA of a retrovirus can produce DNA by
(A) Endonuclease
(B) Reverse transcriptase.
(C) DNA polymerase
(D) RNA polymerase.
194. The Pyrimidine bases in a DNA are:
(A) Cytosine and Guanine
(B) Thymine and Cytosine
(C) Adenine and Guanine
(D) Thymine and Adenine.
195. One turn of DNA helix measures
(A) 24A°
(B) 44A°
(C) 34A°
(D) 3.4A°
196. The tasar silk fiber is produced by
(A) Philosomia ricini
(B) Antheraea assamensis
(C) Antheraea mylitta
(D) Bombyx mori.
(A) Structure of DNA
(B) Antibodies
(C) Life history of Plasmodium Vivax
(D) Vaccinia.
Correct Answer: [A] Structure of DNA.
192. The well-known antibiotic penicillin is obtained from this plant group:
(A) Lichen
(B) Angiosperm
(C) Algae
(D) Fungi.
Correct Answer: [D] Fungi.
193. RNA of a retrovirus can produce DNA by
(A) Endonuclease
(B) Reverse transcriptase.
(C) DNA polymerase
(D) RNA polymerase.
Correct Answer: [B] Reverse transcriptase.
194. The Pyrimidine bases in a DNA are:
(A) Cytosine and Guanine
(B) Thymine and Cytosine
(C) Adenine and Guanine
(D) Thymine and Adenine.
Correct Answer: [B] Thymine and Cytosine.
195. One turn of DNA helix measures
(A) 24A°
(B) 44A°
(C) 34A°
(D) 3.4A°
Correct Answer: [C] 34A°.
196. The tasar silk fiber is produced by
(A) Philosomia ricini
(B) Antheraea assamensis
(C) Antheraea mylitta
(D) Bombyx mori.
Correct Answer: [C] Antheraea mylitta.
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