General Knowledge of Biology For WBCS Prelims Exams P8

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Page 8

135871. Lysine is an essential amino acid because

A

It has a high nutritive value

B

It is not formed in the body and has to be provided through food

C

It is very rate

D

It is an important constituent of all proteins

B

Correct Answer: B. It is not formed in the body and has to be provided through food

251672. Mammals respire by?

A

gills

B

trachea

C

skin

D

lungs

D

Correct Answer: D. lungs

252773. Excess of which of the following in the blood causes the “Blue BabySyndrome” disease?

A

iron

B

lead

C

methamoglobin

D

nitrate

D

Correct Answer: D. nitrate

131374. The narrow portion between uterus and vagina of higher mammals is known as

A

Oviduct

B

Cervix

C

Clitoris

D

Urethra

B

Correct Answer: B. Cervix

144275. RNA of a retrovirus can produce DNA by

A

Endonuclease

B

Reverse transcriptase

C

DNA polymerase

D

RNA polymerase

B

Correct Answer: B. Reverse transcriptase

129876. Limbless Amphibia belongs to the order

A

Gymnophiona

B

Anura

C

Urodela

D

None of the above

A

Correct Answer: A. Gymnophiona

132877. Ruminant Stomach is possessed by

A

Pigeon

B

Cameleon

C

Cow

D

Dog

C

Correct Answer: C. Cow

129278. Scurvy is caused by the deficiency of

A

Vit. C

B

Vit. A

C

Vit. D

D

Vit. B

A

Correct Answer: A. Vit. C

144179. The well-known antibiotic penicillin is obtained from this plant group:

A

Lichen

B

Angiosperm

C

Algae

D

Fungi

D

Correct Answer: D. Fungi

130980. Cancer is caused by activation of genes

A

Structural genes

B

Jumping Genes

C

Regulatory genes

D

Oncogenes

D

Correct Answer: D. Oncogenes

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