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.
426 THE CITY & GUILDS TEXTBOOKTHE DIFFERENCES BETWEEN BACTERIA, VIRUSES, FUNGI AND PARASITES VIRUSES Viruses are much smaller than bacteria, and more complex. They can survive out of the body for a time. Viruses are not affected by antibiotics, which is why antibiotics are not prescribed for viral infections.26 THE CITY & GUILDS TEXTBOOKTHE DIFFERENCES BETWEEN BACTERIA, VIRUSES, FUNGI AND PARASITES VIRUSES Viruses are much smaller than bacteria, and more complex. They can survive out of the body for a time. Viruses are not affected by antibiotics, which is why antibiotics are not prescribed for viral infections.