Bacteria are prokaryotic (lack a nucleus) The Bacterial Cell Bacteria are prokaryotic (lack a nucleus)

Shape of Bacteria Round – cocci Example – strep – throat (Streptococcus)

Shape of Bacteria Rod-shaped - bacilli Example – E. coli (Escherichia coli) Usually found in the intestines

Shape of Bacteria Spiral shaped – spirilla Example – Lyme disease (Borrelia burgdorferi)

Movement of Bacteria Flagella – a long whip-like structure that helps the cell move by spinning in place like a propeller.

A bacterial cell can have many flagella, one or none. If a bacterial cell does not have a flagella, they depend on air, water or clothing to carry them around.

Obtaining Food Autotrophs – make their own food.

Obtaining Food Heterotrophs – obtain food by eating autotrophs or other heterotrophs.

Types of Bacteria Helpful Bacteria Food: cheese, sauerkraut, pickles, sour cream and yogurt

Harmful Bacteria Illness and Health Strep throat and food poisoning

Antibiotic A chemical that can kill bacteria.