Q. Missing function of defective viruses, provided by help of

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Q. Prions are normal human proteins and they do no caused any

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Q. Pseudovirus have ability to infect cell, but , cannot

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Q. Attachment of receptors and virus, known to be

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Q. Attachment of viruses to receptors and protection of genetic material is mediated by the

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Q. In sheep, 'prions' are causative agent for

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Q. 'Viroid' lacks

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Q. 'Prions' lacks

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Q. A single copy of 'genome' in all viruses, put it into a cell, known as

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Q. 'capsid' proteins and nucleic acid 'genome' combines to form

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Q. When capsomeres are arranged in 20 triangles, resulting structure is called as

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Q. Creutzfeldt-Jakob disease, a human disease caused by

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Q. All helical viruses are enclosed in 'nucleocapsid' known as

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Q. Size range of 'virus' is

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Q. 'Viroid' cause diseases rarely in humans, but , mostly in

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Q. Viruses that contain host cell 'DNA' instead of viral 'DNA' is known as

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Q. Viruses that are defective, having proteins and nucleic acid, but, cannot replicate without

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Q. How do viruses spread from one plant cell to next?

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Q. How many T4 phage particles are released when host cell finally bursts?

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Q. Phage that incorporates its genome in host genome is called

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