Bacteria

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

Classified by Shape

Streptococcus pyogenesLactobacillus acidophilislacto = milkbacillus = rod shapedphilus= love of

strepto = in chainscoccus = round shaped

Streptococcus pyogenes

Bacteria Virus

Number of cells: Unicellular No cells; not living

Nucleus: No No 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 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 Infections Viral Diseases

Pneumonia Polio

Strept throat [chains] Measles

Staph Infection [clusters] Rabies

Food Poisoning Chicken Pox

Scarlet/Rheumatic feverCommon Cold/Sinus discomfort

Flu/Cold Sore

Tetanus Hepatitis

Tuberculosis HIV

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!http://www.youtube.com/watch?v=Rpj0emEGShQEbola

400 x- cocci shaped 400 x- cocci shaped but in a sheath causing them appear rod shaped

OscillatoriaNostoc

- Produce food in lakes and ponds- In large amounts can cause death to life in lake due to consuming all oxygen

Bacteria Fun Facts: 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