Antibacterials

=**ANTIBACTERIALS**= __What are antibacterials?__ Antibacterials are chemicals that prevent the growth and/or multiplication of __bacterias__. They exploit the differences between human cells and those of bacteria. The biggest difference is that bacteria have cell walls and cell membrane while human cells only have a cell membrane. So antibacterials work to destroy the cell walls.

__What are bacterias?__ Bacterias consist on a single cell surrounded by a protective wall of complex structures of sugars bonded with peptides and associated with lipids. Each bacteria owns a single chromosome and a particular DNA (deoxyribonucleic acid). There are two types of bacteria; some bacteria are aerobic and are likely to affect the respiratory tract and the skin. Others are anaerobic and multiply in oxygen-free or oxygen-low surroundings. Aerobic bacteria are the ones that are able to use oxygen, while anaerobic are the ones that can sustain themselves without the presence of oxygen.
 * NOT ALL BACTERIA CAUSE DISEASES; SOME ARE EVEN BENEFICIAL

Types of antibacterials
For an antibacterial to be effective it needs to reach its target in high enough concentrations and to remain there for long enough to kill the organism.

Other factors that affect the effect of an antibacterial are:
 * pH
 * Oxygen
 * Microenvironment