Viruses, Viroids and Prions

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Viruses, Viroids and Prions: Overview

This Topic covers sub-topics such as Bacteriophage, Tobacco Mosaic Virus, Prions, Classification of Viruses and, Viroids

Important Questions on Viruses, Viroids and Prions

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Tobacco mosaic virus is a tubular filament of size

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Cauliflower mosaic virus contains:

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Influenza virus has –

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Tobacco Mosaic Virus (TMV) genes are -

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What is scrapie disease?

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Which is true about viroids-

I. Low molecular weight DNA molecule.

II. Lack protein coat.

III. Single stranded RNA

Mark the incorrect option.

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What is meaning of virorid?

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Bovine spongiform encephalopathy is caused by

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Match the following lists:

  List-I   List-II   List-III
A HIV (i) Shelter (I) Auxospores
B Mycobiont (ii) TMV (II) RNA
C Deuteromycetes (iii) Pennales (III) Trichoderma
D Cell wall with silica (iv) Conidia (IV) Mineral absorption

The correct match is:

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What does 'q' indicate in the figure (a)?

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Which of the following can replicate within bacterial cells independently of chromosomal DNA?

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Leucocytes are known as WBCs as they are colourless due to

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Bovine spongiform encephalopathy, a bovine disease is related to which human disease?

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What is indicates A to D in this figure?

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Identify the parts A and B shown in this figure.

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The molecular weight of RNA of viroids is

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'Viroids' was discovered by

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Bacteriophage generally has