This article is about the aqueous solution. For the gas, see hydrogen chloride. Hydrochloric acid is a corrosive, strong mineral acid with many industrial uses. A colorless, highly pungent solution of hydrogen chloride (HCl) in water, when it reacts with an organic base it forms a hydrochloride salt.
Bacteria are intercellular organisms (i.e. they live in-between cells); whereas viruses are intracellular organisms (they infiltrate the host cell and live inside the cell). They change the host cell's genetic material from its normal function to producing the virus itself.
Learn the basic differences. There are key differences between bacteria and viruses in size, origins, and effects on the body. Viruses are the smallest and simplest life form; they are 10 to 100 times smaller than bacteria. Bacteria are single-celled organisms that can live either inside or outside other cells.