Question

Why are virus described as obligate parasites?

Answer 1

Explanation:

All viruses are obligate parasites because they lack metabolic machinery of their own to generate energy or to synthesize proteins, so they depend on host cells to carry out these vital functions.

Because it cannot function or replicate without a host. Virus particles outside the cell are inert and perform no metabolic processes or environmental interaction. Therefore, it is obligated to enter a cell in order to replicate and perform functions of ‘life’.

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Answer 2

Explanation:

All virus are obligate parasite because they lack metabolic machinery of their own to generate energy or to synthesise proteins,so they depend on host cell to carry out these vital functions.