Question

17.
Comment
(a) Curd turns sour faster in summer.
(b) Viruses are neither living nor non-living.​

Answer 1

Answer:

viruse live when entered to aliving cell

Answer 2

Answer:

a) Cud turns sour faster in summer because bacteria grow faster in summer than in winter due to the favourable conditions and as the number of bacteria increases it makes the curd sour.

b) This is because viruses do not have the cellular machinery that is required to multiply, hence they hijack a living cell. Another aspect that makes viruses lie on the border between the living and the non-living is their ability to be crystallized.

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