Viruses From Animal and Plants – Section 1

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

A. DNA gyrase
B. DNA gyrase
C. RNA gyrase
D. RNA gyrase

Correct Answer: A. DNA gyrase

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

A. aneuploidy
B. protopathic effect
C. cytopathic effect
D. none of these

Correct Answer: C. cytopathic effect

28. The structural abnormality of cells is termed as

A. hyperplasia
B. anaplasia
C. metastasis
D. all of these

Correct Answer: B. anaplasia

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

A. viropexis
B. viropexis
C. ectodesmata
D. viropexis

Correct Answer: B. viropexis

30. Viropexis takes place in the phagocytic vacuoles and is due to the action of enzymes

A. DNA gyrase
B. lysosomal protease
C. lysosomal lipase
D. all of these

Correct Answer: B. lysosomal protease

Leave A Comment?

2 × one =