BACTERIA Bio 1B

Where do bacteria live?  Pretty much everywhere  In soil, air, animals, and plants  On our skin, in our mouths, our guts  BUT, most are HARMLESS and even BENEFICIAL

Classified by Three Basic Shapes  Spherical (cocci)  Streptococcus (strep throat)  Staphylococcus (staff infection)  Rod-shaped (bacilli)  Salmonella  Spiral (spirillim)  Leptospira (leptospirosis: black jaundice)  Borrelia burgdorferi (Lyme Disease)

Structure of a Bacterial Cell Vocab Words to Know:  Pili {pie-lie} and (plural pilus {pie-lus}): reproductive structures  Flagellum- whip-like structure that allows life forms to swim  Nucleoid – general area where genetic material found in bacteria (NOT membrane-bound like a nucleus)  Plasma membrane- bacterial cell membrane  Cell Wall- holds structure  Capsule- a layer outside the cell wall

Outer layers

Penicillin: The first antibiotic  How penicillin works(11:38) How penicillin works  How does it kill bacteria?  The New Antibiotics in Development The New Antibiotics in Development

Culturing Bacteria  Make a culture Make a culture  Brainstorm places in the school to sample. Rate which will be the “cleanest.”