Archaea & Bacteria

What is a bacteria?

Archaea & Bacteria

Cell Type: Prokaryote (no nucleus)

How it Gets Food: Autotrophic & Heterotrophic

Cell Number: Unicellular (single-celled)

Where do you find bacteria?

Archaea   Dense mud of swamps and marshes   In the guts of animals and termites   Very salty lakes and ponds   Extremely hot and cold places

Bacteria   Everywhere

Basic bacteria cell diagram

Bacteria cell

Types

Bacteria Shapes

Spiral shaped bacteria occur in single strands.

Bacteria Shapes

Rod-shaped bacteria may occur singly or in chains.

Bacteria Shape

Round-shaped bacteria may occur singly or in pairs, chains, or clusters.

Bacteria Characteristics &

Examples Bacteria

 Found most everywhere and perform a variety of tasks.

Examples  Escherichia coli  Staphylococcus

Archaea  Lives in extreme

environments Examples

 Methanogens  Halophiles  Thermophiles

Bacteria can be helpful or harmful

Helpful   Breaks down dead and

decaying organisms   Breaks down sewage   Change material that do

not come from living things and make them available for other organisms.

  Clean up oil spills

Harmful  Causes disease

Bacterial Roles

 Producer: Bacteria that transforms energy from the sun into energy that can be used by cells.

 Decomposer: Bacteria that gets its energy by breaking down materials in dead or decaying organisms.

 Parasites: Bacteria that harms its host.