Question

4. Which of the following statements are true for viruses?
(a) Viruses multiply only in living host.
(b) Viruses may be crystallized.
(c) Virus crystals have a definite shape.
(d) Viruses grow and multiply by themselves outside the host.​

Answer 1

Answer:

b)

Explanation:

Because in the outside environment, the viruses remain inactive:)

so (b) is correct.

Answer 2

Answer:

1 true

2 true

3 may be false

4 false