An atom consists of an atomic nucleus composed of positively charged protons and neutral or uncharged neutrons.
Antibiotics inhibit enzymes specific to bacteria and have no effect on vi-rally
encoded enzyme.
The prokaryotes are unicellular organisms that lack organelles or other internal membrane-bound structures. Therefore, they do not have a nucleus, but, instead, generally have a single chromosome: a piece of circular, double-stranded DNA located in an area of the cell called a nucleoid
