Bacteria
General Characters
Unicellular, prokaryotic
No true nucleus
Cell wall made of peptidoglycan
Size: 1–5 µm
Structure
Cell wall
Plasma membrane
Cytoplasm
Nucleoid (DNA)
Ribosomes (70S)
Flagella / Pili (optional)
Nutrition
Autotrophic (photo & chemo)
Heterotrophic (saprophytic, parasitic)
Reproduction
Binary fission
Genetic recombination (conjugation, transformation)
Importance
Nitrogen fixation
Antibiotics
Diseases (TB, cholera)
