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.
1.1. Identify the differences between bacteria, viruses, fungi and parasites. Bacteria: A bacteria is a single celled organism, they are either a parasite or live independently.dentify common illness and infections caused by bacteria, viruses, fungi and parasites. Viral and bacterial infection. Viruses: Viruses can affect many different parts of the body or more than one body system at the same time for example a runny nose, sinus congestion, cough or body ache.