MICROBES. The Virus  Genetic material + Protein coat  Geometric shapes  Non -living, Reproductive machine.

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Presentation transcript:

MICROBES

The Virus  Genetic material + Protein coat  Geometric shapes  Non -living, Reproductive machine

Villains  HIV  Hepatitis  Herpes  Influenza  Smallpox  Ebola

Infective Pathways  Lytic Virus recognizes cell begins cycle of infection immediately. (illness begins) (influenza, common cold, ebola)  Lysogenic Virus “hides” in genetic material of host. (provirus) Infective cycle is delayed & infection is harder to treat. (HIV, hepatitis, herpes)

Vaccines

Heroes ?  Variegated leaves - flowers

CONTROL  Vaccines  Temperate – harmless form of a virus is injected  Live – small amts of weakened virus BOTH encourage the immune system to make antibodies.

Bacteria  Smallest living organism  Survive in every environment  Helpful & harmful  3 shapes, orientations

Spherical (Coccus)

Rod (Bacillus)

Helical (Spirillum)

Gram + / Gram -  Staining technique used to help identify bacterial flora  Gram + flora = peptidoglycan in cell wall (stain purple in crystal violet)  Gram – flora = no ppg, turn pink when safranin counter stain added.

Heroes !  Help digest food, absorb nutrients  Boost immune system

Beneficial species  Acidophilus  L. casei immunitas

Villains  E. coli 0157  Botulinum  Anthrax

Exposure ?  Contaminated food  Unclean hands  Animal carriers  Warfare

Protection ?  WASH HANDS !  Clean / inspect food  Clean, pest free living area  Vaccines  Be alert

Treatment Alexander Fleming 1928 Penicillium notatum mold Killed bacteria in culture First Antibiotic – transformed treatment of disease and infection

1.Misuse treatments for viral infections or repeatedly for bacterial infections 2.Not all bacteria are destroyed by the antibiotic 3.Stronger, resistant bacteria remain 4.More difficult to destroy the bacteria when it infects again

Page text Diagram, color and label the typical bacterium in your notes

Protists

Single cell critters (Protists)  Eukaryotes (true nucleus, organelles)  Base of food web  Both free living and parasitic

Protist Classification  Rhizopods (amoeba)  Ciliates (paramecium)  Sporozoans (malaria- Plasmodium)

Rhizopod Locomotion

Ciliate Locomotion

Flagellate Locomotion

Villains  Entameba histolytica (dysentery)  Plasmodium (malaria)

PARASITIC PROTISTS

Protist Populations

Microbes  Both helpful & harmful…  Many that are harmful can be treated  Avoid contaminated food, water  Vaccines when available !  Common sense