Bacteria:

Classification and Structure

What are the 6 Kingdoms?

• Archaebacteria• Eubacteria• Protists• Fungi• Plants• Animals

We are looking at the first two

• Archaebacteria

• Eubacteria

Classification of Bacteria

• Archaebacteria: extremists

• Eubacteria: –Heterotrophs

–Photosynthetic autotrophs

–Chemosynthetic autotrophs

Archaebacteria

• Live in extreme locations:– Oxygen-free

environments– Concentrated

salt-water– Hot, acidic

water

Eubacteria - Heterotrophs

• Found everywhere

• Parasites: live off of other organisms

• Saprobes: live off of dead organisms or waste (recyclers)

Eubacteria: Photosynthetic Autotrophs

• Photosynthetic: make their own food from light

• Cyanobacteria: blue-green, yellow, or red

• ponds, streams, moist areas

Eubacteria: Chemosynthetic Autotrophs

• Get energy by breaking down inorganic substances like sulfur and nitrogen

• Make nitrogen in the air usable Make nitrogen in the air usable for plantsfor plants {Very Important}

Structure of Bacteria

• Two parts to Bacteria Structure:–Arrangement

–Shape

Arrangement

• Paired: diplo

• Grape-like clusters: staphylo

• Chains: strepto

Shape

• Rod: bacillus

• Spheres: coccus

• Spirals: spirillum

Examples

• Streptococcus: chains of spheres

• Staphylospirillum: Grapelike clusters of spirals

• Streptobacillus: Chains of rods