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Protista , Fungi, Bacteria, and Viruses. Protista. A protist is any organism that is not a plant, animal or fungus - Eukaryotes ( have nucelus ) - U nicellular or multicellular - Heterotrophs (obtain food) or autotrophs (make food)

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Protista fungi bacteria and viruses

Protista, Fungi, Bacteria, and Viruses


Protista
Protista

  • A protist is any organism that is not a plant, animal or fungus

    -Eukaryotes (havenucelus)

    -Unicellular or multicellular

    -Heterotrophs (obtain food) or autotrophs (make food)

    -May be categorized into animal-like (movement),

    plant-like (algae), or fungus-like (water molds)


Protista1
Protista

  • Some live freely; others on parasites

  • Most live in water

  • EX/ amoeba, paramecium, algae, mold

  • **Algae benneficial- produces oxygen and food for lower organisms on food chain, fertilizers..ect

  • http://www.youtube.com/watch?v=-zsdYOgTbOk


Kingdom fungi
Kingdom Fungi

  • Eukaryotes (Havenucelus)

  • Unicellular or multicellular,

  • Heterotrophs, autotrophs, saprophytic (break down dead matter)

  • Some are parasitic and obtain nutrients from living hosts

    **Benneficial- mushrooms as food, penicillin production, eat decaying matter, yeast (beer/bread)


Fungi
Fungi

Structure: Have cell walls that contain chitin

Do not undergo photosynthesis

Hyphae:Long branching structure of fungi

Mycelium: Vegetative part of fungi and reproductive part

Mycologist (scientist who study fungi) are said to have only identified 5% of all fungi



Bacteria germs
Bacteria “germs”

  • Classified into 3 groups based on their shapes-

  • Cocci: Round shaped

  • Bacilli: Rod shaped

  • Spirilli: Spiral shaped

Bacteria Structure


Bacteria
Bacteria

  • Respiration:

    • Obligate anaerobes - cannot survive in the presence of atmospheric oxygen.

    • Facultative anaerobes - can live with or without atmospheric oxygen.

    • Obligate aerobes - cannot survive without atmospheric oxygen.

      *Beneficial uses?

      -digestion, building up/breaking down organic compounds, wastes, tobacco, immune system


How to prevent the spread of bacteria
HOW TO PREVENT THE SPREAD OF BACTERIA

  • Wash hands

  • Disinfect surfaces

  • Sanitize

  • Store foods at

    Proper temps


Viruses
Viruses

  • Surrounded by a protein coat called CAPSID

  • NOT considered living

  • 1/100th size of bacteria

  • Has only RNA or DNA

    (not both)


Viruses1
Viruses

  • Reproduces only after infecting a host cell

    (Can not live independently)Reproduces quickly!

  • Lytic Cycle- Destroys cell by replicating virus Nucleic acids instead of the cells. Then it infects other cells

  • Lysogenic Cycle-DNA integrated into cells reproduction- does not destroy cell.


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