COMPARATIVE STUDIES OF NATURAL GROUPS
Viruses: -are simple structures with genetic material in the centre and surrounded by capsomere.
- Are obligate or compulsory parasites as
they can only carry out metabolic activities inside organisms.
- Parasites are any organisms living in or on
another organism deriving nutrients from the host and depending on the
host for its life processes and retain only a few of them such as
reproduction.
- Viruses are a cellular nucleic particles
coated with a protein coat.
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