The Quick and Dirty of Microbiology

Bacteria Structure Unicellular Prokaryotic Some have flagella No nucleus Two domains: Eubacteria & Archea

Different Shapes Bacillus: Rod-Shaped Coccus: Round-Shaped Spirrilium: Spiral-Shaped Arrangements Staphlo- Grape-like cluster Strep- Chain Diplo- Pair

Roles of Bacteria Decomposers Nitrogen Fixation Dairy Production Bio-technology Some of them are pathogens. Gram Staining Purple- Gram + usually can be treated with antibiotics. Red/Pink Gram – Usually cannot be treated.

Viruses Non-living Made of DNA/RNA surrounded by protein coat (capsid) Cannot be treated with antibiotics. Bacteriophage is a virus that infects bacteria.

Viral Infection Lytic Infection Virus invades the host cell and immediately starts making virus parts. Rapid reproduction

Viral Replication Lysogenic Infection Delayed infection DNA incorporated into host genome.

Kingdom Protista A eukaryotic organism that is not a plant, animal or fungus. Mostly unicellular Some are heterotrophic, some are autotrophic. Classified by method of movement.

Endosymbiotic Theory The development of a eukaryotic cell comes from a symbiotic relationship between simpler cells.

Disease Causing Protists Malaria is caused by a non-motile protists called plasmodium. Carried by a mosquito.