Post on 08-Jan-2017
Bacteria
Single –celled organisms
Shape
Spherical– coccus
coccus, diplococcus,
streptococcus, sarcinae, tetrads, staphylococcus,
Rod-shaped
bacillus, diplobacillus,
streptobacillus
Spiral
Vibrio, spirillum, spirochete
Filamentous
Spherical– coccus: 0.5-2 μm
Rod-shaped: 1-10 μm
Spiral: 9-15 μm
Filamentous: 1-10 μm
Bacterial cell structure
Gram staining
Spores – a structure inside the bacterial cell that helps it survive harsh conditions e.g.: high or low temperature, radiation, lack of food, etc.
- Bacterial enzymes
-Synthesis and breakdown of organic matter
Bacterial growth-ensure the continuity of the species-minutes to hours
Microbiology – branch of science that studies the microorganisms
Bacteria Classification
Feed
ing
beha
vior phototrophs
chemotrophs
saprophytes
symbiotic
Bacteria Classification
O2 aerobes
anaerobes