Bacteria

Unit 5 - Viruses and Bacteria (Ch. 18) Identify the major components of a Bacterium and Viruses List the two major stages / life cycles of Viruses Define Vaccines Identify the three types of groupings and shapes of bacteria List at least 5 different types of bacteria and or viral infections that can affect the body

SWBAT Scale 4: Same as a 3.0 but I can make inferences & application to the SWBAT’s 3: I COMPLETELY understand all parts of the SWBAT 2: I understand MOST of the SWBAT’s with teacher help 1: I understand a little of the SWBAT’s but need teacher help 0: I do NOT understand any part of the SWBAT’s and need help!

Video

Two Kingdoms of Bacteria Archaebacteria – the extremists No-oxygen environments – makes methane gas Marshes & lake sediments Digestive tracts of animals Sewage treatment plants – help break down sewage High salt environments – Utah’s great salt lake and the Dead Sea Hot waters of sulfur springs and cracks deep in the ocean floor.

Eubacteria Heterotrophs – get food from other organisms Photosynthetic Autotrophs – Make their own food - photosynthesis Chemosynthetic Autotrophs – Convert chemicals from atmosphere and soil into food

Bacterial Structure? Capsule – sticky layer outside the cell wall (not all have this) Cell wall – supports and protects Plasma membrane – regulates what enters and leaves the bacterium Plasmid –single circular DNA chromosome (NOT A NUCLEUS!!!)

Shapes: Bacillus Coccus Spirillium (Rod-shaped) (spherical) (spiral)

GROUPINGS DIPLO (TWO) STREP (CHAIN) STAPH (CLUSTER)

Gram Stain Gram + Bacteria: turn purple (killed by antibiotic penicillin-attacks the cell wall) –Ex. Strep throat Gram – Bacteria: turn pink (killed by antibiotic tetracycline-doesn’t attack the cell wall) - E.Coli Antibiotics are drugs used to fight bacterial disease

Importance of Bacteria They change “FIX” NITROGEN from the air so organisms can use it Recycle nutrients (oxygen) Food: swiss cheese, pickles, yogurt, vinegar, sauerkraut E. Coli live in our intestines and help digest food Some antibiotics are made by bacteria

Bacteria can cause disease Strep throat Tuberculosis Tetanus Lyme Disease Dental cavities Diphtheria – from contaminated water The Bubonic Plague – transmitted from fleas STDs such as chlamydia, gonorrhea, syphilis Food Poisoning (E.Coli)

Unit 5 - Viruses and Bacteria (Ch. 18) Identify the major components of a Bacterium and Viruses List the two major stages / life cycles of Viruses Define Vaccines Identify the three types of groupings and shapes of bacteria List at least 5 different types of bacteria and or viral infections that can affect the body

SWBAT Scale 4: Same as a 3.0 but I can make inferences & application to the SWBAT’s 3: I COMPLETELY understand all parts of the SWBAT 2: I understand MOST of the SWBAT’s with teacher help 1: I understand a little of the SWBAT’s but need teacher help 0: I do NOT understand any part of the SWBAT’s and need help!