Bacteria Two kingdoms of bacteria most common oldest

Bacteria

Two kingdoms of bacteria: • ______________: most common • ____________ – oldest organisms on earth, inhabit extreme conditions • Methanogens, halophiles, thermoacidophiles

Bacteria are: • ___________________________; have no true nucleus or other membrane bound organelles • Some are autotrophic, some are heterotrophic • Some are _______________; require oxygen • Some are obligate anaerobes; ______________ • __________________________

Bacteria contain: • ___________ (nucleoid) • circular pieces of DNA called _________ • DO have ________

Bacteria reproduce: Asexually using ______________.

Bacteria reproduce: ______________. Bacteria exchange __________. This is how bacteria become ____________.

Three bacterial shapes: 1. ______ shaped; bacillus(i) 2. ______ shaped; coccus(i) 3. ______ shaped; spirillum(i)

Antibiotics: Work by ______________________________________. • Common Bacterial Infections • ___________; rash, fever, fatigue, head/muscle pain • __________; muscle spasm, paralysis/death • ___________; fever, sore throat, swollen glands