antibiotics

• what is the definition of a antibiotic


  A chemical substance produced by a fungus that has the capacity to inhibit the growth of or to kill other microorganisms
• what are the two types of antibiotics

  bacteriostatic an bactericidal
• what is the function of bacteriostatic antibiotics


  to prevent the growth of bacteria
• what is the function of bactericidal antibiotics


  to kill the bacteria
• what are antibiotics produced by


  fungi
• what do antibiotic act on

  bacteria
• what cells do antibiotic not work on


  eukaryotic cells or viruses
• what are antibiotics used to treat


  bacterial infections
• what does the bacterial cell wall structure contain


  peptidoglycan
• what does peptidoglycan consist off


  molecules of polysaccharides cross linked by amino acid side chains
• what is the function of amino acid side chains


  to provide strength and prevent osmotic lysis
• What is lipopolysaccharide?


  Large complex molecule composed of polysaccharides linked to lipid molecules
• where will a lipopolysaccharide be found


  on the outer layer of some bacteria
• what colour will the counter stain appear when a bacteria has an outer layer of lipopolysaccharide


  it will appear red/pink
• if a bacteria has an out layer of lipopolysaccharide what type of bacteria is it


  gram negative
• what is the function of an extra layer of lipopolysaccharide on a bacteria


  it provides protect for some antibacterial agent such as penicillin
• what type of infection can be treated by antibiotics and why


  bacterial because the use of antibiotics wont harm the patient