VIRUSES FROM ANIMAL AND PLANTS QUIZ

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

None of these

Production of ribosomes

Synthesis of protein

Both (a) and (b)

TRUE ANSWER : ?
YOUR ANSWER : ?

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

Penetration, attachment, biosynthesis, maturation, release

Attachment, release, biosynthesis, maturation, penetration

Attachment, penetration, maturation, biosynthesis, release

Attachment, penetration, biosynthesis, maturation, release

TRUE ANSWER : ?
YOUR ANSWER : ?

Supercoiling refers to the extra turns in the structure of ds DNA due to the action of

RNA gyrase

DNA pyrase

DNA gyrase

RNA pyrase

TRUE ANSWER : ?
YOUR ANSWER : ?

Which type of interferon is produced by T lymphocytes?

β

α

γ and β

γ

TRUE ANSWER : ?
YOUR ANSWER : ?

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

Type of nucleic acid

Type of cell wall structure

Presence of an envelope

Symmetry

TRUE ANSWER : ?
YOUR ANSWER : ?

The structural abnormality of cells is termed as

all of these

hyperplasia

metastasis

anaplasia

TRUE ANSWER : ?
YOUR ANSWER : ?

The tissue structure deteriorates as the virus multiplies. This deterioration is called

none of these

aneuploidy

protopathic effect

cytopathic effect

TRUE ANSWER : ?
YOUR ANSWER : ?

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

vitropexis

viropexis

ectodesmata

vivopexis

TRUE ANSWER : ?
YOUR ANSWER : ?

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

protodesmata

none of these

cytodesmata

plasmodesmata

TRUE ANSWER : ?
YOUR ANSWER : ?

The predominant lipid substance found in the viral envelope is

neutral fat

glycolipids

phospholipids

all of these

TRUE ANSWER : ?
YOUR ANSWER : ?