Download Bacteria

Bacteria
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Bacteria are the most numerous organisms on earth
Inhabit arctic and Antarctic to the bottom of the sea
Primary decomposer of the world
Hetero and autotrophic forms
Reproduce by binary fission —1 cell splitting into 2
 Can exchange genetic material—transformation &
conjugation
Bacteria Shapes
Structure of Bacteria
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Cell wall and cell membrane
Circular DNA
Endospore protect it from harsh environments
Flagella—whip like structures that aid in movement
Bacteria/ Human
Eubacteria
cause diseases in humans by releasing toxins,
and destroying body tissues—tooth decay, food poisoning,
Strep Throat
 Antibiotics are widely used to kill bacterial infections—
penicillin
 They are useful to help purify sewer, process many foods
(yogurt, cheese, pickles)
 Bacteria such as E. coli help digest food, and supply vitamins
Archaebacteria
 Archaebacteria live in harsh environments
Virus
Virus  - a non-cellular particle made up of genetic material and protein that can invade
living cells.
*** Viruses cannot carry out any life processes unless they are within a living host
cell.
Hidden or active   
vaccine - a weakened virus introduced into a body to induce immunity to a virus.
Viral Diseases - smallpox, polio, measles, HIV (AIDS), mumps, influenza, yellow fever,
rabies, and common colds.