MicroorganismsBacteria, Fungi, Viruses, and Protists

Viruses

Non-living: Need a host to reproduce Lysogenic Cycle: break out of the cell

when reproduction is finished. Lytic Cycle: Can remain dormant for

long periods of time; then enters lysogenic cycle.

Causes HIV, Flu, Chicken Pox, HPV, Colds

Virus Examples

Bacteria

Two kingdoms:› Archaebacteria: extremophiles› Eubacteria: some cause disease; useful in

food production (yogurt, cheese) Shapes:

› Rod (Bacillus)› Circle (Coccus)› Spiral (Spirillum)

Bacteria Examples

Streptococcus

StaphylocuoccusSpirillum

Protists

Anything not considered bacteria, fungi, or virus.

Single or colonial. Can move by cilia, flagella, or

pseudopods. Some plantlike (photosynthesize);

Others animallike (heterotrophic)

Protist Examples

Fungi

Some unicellular Decomposers and Saprobes (feed off of

living things) Mushrooms, Yeast, Molds Used to make bread and alcohol Penicillin made by a mold.

Fungi Example