VIRUSES FROM ANIMAL AND PLANTS QUIZ

The nucleocapsid is covered by an outer membrane like structure called

all of these

covering

membronocapsid

envelope

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Fluorescence microscopy can be used for the diagnosis of

Herpes simplex encephalitis

All of these

Rabies

Subacute sclerosing panencephalitis

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The predominant lipid substance found in the viral envelope is

neutral fat

phospholipids

all of these

glycolipids

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Transfer of infection from cell to cell occurs mainly by direct transfer of virions via

protodesmata

plasmodesmata

cytodesmata

none of these

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Which of the following reflects the correct order of events that take place during the multiplication of a virus?

Attachment, release, biosynthesis, maturation, penetration

Attachment, penetration, biosynthesis, maturation, release

Penetration, attachment, biosynthesis, maturation, release

Attachment, penetration, maturation, biosynthesis, release

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Which of the following characteristics would not be used to classify viruses?

Type of nucleic acid

Symmetry

Presence of an envelope

Type of cell wall structure

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What is the function of positive strand in double stranded RNA viruses?

None of these

Both (a) and (b)

Synthesis of protein

Production of ribosomes

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The penetration of animal viruses into attached cells occur by mechanisms consisting of engulfment of whole virions by the cells in a phagocytic process called

vivopexis

vitropexis

viropexis

ectodesmata

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Plant viruses penetrate host cells through transient ores called

cytodesmata

endodesmata

protodesmata

ectodesmata

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Which type of interferon is produced by virus-infected cells?

β

None of these

α

Both (a) and (b)

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