 One square inch of skin contains more than a half a million bacteria

Streptococcus pyogenes Lactobacillus acidophilis lacto = milk bacillus = rod shaped philus= love of strepto = in chains coccus = round shaped

Streptococcus pyogenes

Bacteria Virus Number of cells:Unicellular No cells; not living Nucleus:NoNo because it has no cells Reproduction: Fission- a form of asexual reproduction Sexual Invades a host cell and takes over the cell causing it to make copies of the viral DNA. Destroys the host cell releasing new viruses. Can cause disease?:Yes Size: Larger (1000 nanometer) 1 nm = one billionth of m Smaller (20 – 400 nm) How is it treated?:Antibiotics Vaccines prevent the spread and antiviral medications help to slow reproduction but can not stop it completely. Shape:

Bacterial InfectionsViral Diseases PneumoniaPolio Strept throat [chains]Measles Staph Infection [clusters]Rabies Food PoisoningChicken Pox Scarlet/Rheumatic fever Common Cold/Sinus discomfort Flu/Cold Sore TetanusHepatitis TuberculosisHIV The virus is about to attack the bacterium. The virus injects its genetic material into the bacterium. The bacterium explodes after it is forced to make copies of the virus! Ebola

400 x- cocci shaped 400 x- cocci shaped but in a sheath causing them appear rod shaped - Produce food in lakes and ponds - In large amounts can cause death to life in lake due to consuming all oxygen

 99% of Bacteria are helpful: help with digestion, used to make food, break down oil spills, purify water at sewage treatment plants  90% of the cells in/on your body are bacteria.  Scientists estimate bacteria produce nearly ½ of oxygen found in atmosphere  One square inch of skin contains more than a half a million bacteria