451. The usual shape of growth curve is

A Sigmoid
B Zig-zig
C Linear
D Inverted fell shaped
Answer :   Sigmoid
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452. AIDS Virus has

A Single strand DNA
B Double strand DNA
C Single strand RNA
D Double strand RNA
Answer :   Single strand RNA
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453. Select the wrong statements :

A W.M. Stanley showed that viruses could be crystallized
B The term 'contagium vivum fluidum' was coined by M.W. Bejerinek
C Mosaic disease in tobacco and AIDS in human being are caused by viruses
D The viroids were dicovered by D.J. Ivanowski
Answer :   The viroids were dicovered by D.J. Ivanowski
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454. Malaria fever coincides with liberation of

A cryptomerozoites
B metacryptomerozoites
C merozoites
D trophozoites
Answer :   merozoites
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455. In Plasmodium signet ring is formed during

A Exo-erythrocytic schizogony
B Erythrocytic schizogony
C Gamogony
D Sporogony
Answer :   Erythrocytic schizogony
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456. Salmonella is related with

A Typhoid
B Polio
C T.B
D Tetanus
Answer :   Typhoid
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457. Minimum number of females per 1000 males in India is in

A Haryana
B Goa
C J.K.
D M.P.
Answer :   Haryana
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458. Syphilis a sexually transmitted disease is caused by

A Leptospira
B Vibrio
C Pasteurella
D Treponema
Answer :   Treponema
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459. Which is Cancerous tumour

A Benign tumour
B Melignant Tumour
C Lipoma
D All of the above
Answer :   Melignant Tumour
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460. Hybridoma cells are

A nervous cells of frog
B hybrid cells resulting from myeloma cells
C only cells having oncogenes
D product of spore formation in bacteria
Answer :   hybrid cells resulting from myeloma cells
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