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Bacteria , Viruses, and Protist

Bacteria , Viruses, and Protist. Bacillus anthrax. Human immunodeficiency virus. Bifidobacterium. Classifications: Bacteria Archaea Eukarya Eubacteria Archaebacteria Protista Fungi Plantae Animalia (prokaryote) (prokaryote) (eukaryotes------------- ).

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Bacteria , Viruses, and Protist

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  1. Bacteria,Viruses, andProtist Bacillus anthrax Human immunodeficiency virus Bifidobacterium

  2. Classifications: Bacteria ArchaeaEukarya Eubacteria Archaebacteria Protista Fungi Plantae Animalia (prokaryote) (prokaryote) (eukaryotes-------------) 1 3 2 What about viruses….?

  3. Identifying Bacteria Cell type? Unicellular or multicellular? Shapes: Bacilli- rod shaped Cocci- circular, round Spirilla- spiral shaped

  4. Why do we need bacteria?

  5. 1. Nitrogen-fixing Bacteria Rhizobium

  6. 2. Industrial Uses

  7. 3. Bacterial infections 2 different types of infection: 1. Bacteria damages cells and tissue, for food 2. Bacteria release toxins Examples: Lyme disease, Strep throat, Tetanus Prevention and solutions??

  8. What is a virus? 1. Typically, composed of DNA or RNA surrounded by a protein coat 2. NEED a host, can only reproduce by infecting living cells 3. Use the machinery of the cell to produce more viruses

  9. Viruses NEED our cells 2 ways a virus can infect a cell: • Virus enters cell, makes copies of self, and causes the cell to BURST: ex: common cold, influenza 2. Virus inserts its DNA into the DNA of the host cell. The viral genetic info replicates along with the host cells DNA: ex: HIV, HPV, Herpes simplex Examples: Warts, AIDS, West Nile

  10. Flu Attack! How a virus invades your body video • http://www.npr.org/blogs/krulwich/2011/06/01/114075029/flu-attack-how-a-virus-invades-your-body

  11. Viral Diseases Retrovirus: RNA virus HIV, T-cell leukemia, study of oncogenes Helper T cells: type of white blood cell, in immune system, help other immune cells. ex. HIV Antibody: produced by B-cells, used by immune system to ID foreign objects like bacteria and viruses. Prevention and treatment ?

  12. Specialized structures of Cells 1. Contractile vacuoles 2. Flagella 3. Cilia 4. Pseudopods 5. Eyespots why develop these special structures?

  13. Specialized structures Contractile vacuoles: cavities in the cytoplasm, collect water. When full, water gets pumped out cell maintains homeostasis

  14. Specialized structures Flagella: long, whip-like projections, allow a cell to move Example: E-coli

  15. Specialized structures Cilia: short, hair-like projections, allows for movement, moves like an oar

  16. Specialized structures Pseudopods: projections of the cytoplasm, feeding and movement

  17. Specialized Structures Eyespot: a cluster of reddish pigment, helps organism find sun light to power photosynthesis Why develop these special structures?

  18. The Kingdom Protist Protists are eukaryotes that are not members of the kingdoms Plantae, Animalia, or Fungi. Cell type? Unicellular or multicellular?

  19. Examples of Protists: Paramecium,Amoeba,Euglena Paramecium: Unicellular, cilia Shape: shoe’s sole Contractile vacuoles Freshwater

  20. Amoeba Shapeless, unicellular Contractile vacuole Pseudopods Fresh water, salt water, and soil

  21. Euglena Unicellular, flagella Chlorophyll Fresh and salt water ?

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