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Microorganisms and Virus Classification

Learn about the different types of microorganisms including bacteria and viruses, their classification, shapes, and reproduction. Discover how viruses differ from bacteria and their unique relationship with host cells.

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Microorganisms and Virus Classification

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  1. Warm Up • 1. What has been your favorite thing about 6 grade so far? • 2. How do you think you did on the test? • 3. What are the 7 levels of classification?

  2. Kingdoms How are viruses different from bacteria?

  3. What are the 6 Kingdoms? • Archaebacteria • Eubacteria • Protists • Fungi • Plants • Animals

  4. Bacteria • Micro- small (microscope- to look at small things) • Bacteria used to be classified into one kingdom called Monerans. • Now it’s split into two kingdoms: Archaebacteria and Eubacteria

  5. Bacteria are prokaryotes • Pro – before • Karyon – nucleus • The simplest forms of life are prokaryotes. • Earth’s first cells were prokaryotes.

  6. Eubacteria • They are the common bacteria that causes the diseases we are familiar with.

  7. Archaebacteria • These are the oldest bacteria. • They are found in extreme conditions like hot springs and thermal vents in the ocean under conditions with no oxygen or highly acid environments.

  8. Shape • Rod: bacillus • Spheres: coccus • Spirals: spirillum

  9. Bacteria reproduce rapidly.

  10. Viruses Dead or alive?

  11. Viral structure • Viruses are not cells. • Basic structure: • Protein coat • Nucleic acid core (RNA or DNA) • Lipoprotein coat • (second coat – only in enveloped viruses)

  12. Is A Virus Alive? • This may look like a space capsule, but it's actually a virus. • The top part is the capsid, the body is the sheath, and the tails at the bottom help the virus attach to its host

  13. Is A Virus Alive? • Viruses are right on the border between living and nonliving. • Viruses must have a host cell to live and reproduce. • Outside of the host cell, viruses are pieces of genetic molecules that can do nothing by themselves.

  14. Video • http://www.youtube.com/watch?v=Rpj0emEGShQ • http://www.youtube.com/watch?v=JnlULOjUhSQ

  15. Warm Up • 1. What is eubacteria? • 2. What is archaebacteria? • 3. What is a virus? • 4. What are the shapes of bacteria? • 5. What are all of the kingdoms?

  16. Virus Stages • Virus attaches • Virus injects DNA • Hostile takeover of cell • Cell forced to make virus parts. • Virus splits the cell • So many = blows the cell apart

  17. Let’s Compare!

  18. Let’s Compare!

  19. Let’s Compare!

  20. Warm UP • 1. What are the stages of virus reproduction? • 2. What are the 6 characteristics of life? • 3. What is eubacteria? What is archaebacteria? Where are they found? • 4. Go get your potatoes and wait for instructions.

  21. Some Bacteria live symbiotically in the guts of animals or elsewhere in their bodies. • For example, bacteria in your gut produce vitamin K which is essential to blood clot formation.

  22. Bacteria put the tang in yogurt and the sour in sourdough bread. • Saprobes help to break down dead organic matter. • Bacteria make up the base of the food web in many environments. Streptococcus thermophilus in yogurt

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