BIOG 1106: Unit 4 Slides:

Viruses and Bacteria

The first eight slides are of viruses. Viruses are not cells, and though they may possess a few enzymes, they lack the metabolic machinery for energy generation and they never have the ribosomes required for protein synthesis.

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slide 1
1. Bacteriophage
The next three slides show bacteriophage replication. Remember that viruses cannot reproduce themselves. Rather, the host cell manufactures new viruses using the genetic instructions provided by the virus.
Slide 2
2. Phages attack		 Slide 3
3. Phages invade
slide 4
4. Phages infect
The next four slides show viruses that attack eukaryotic cells. Note that these viruses are not as structurally complex as the bacteriophages.
 slide 5
5. Rod-shaped virus		 slide 6
6. Adenovirus
 slide 7
7. Influenza virus
 slide 8
8. Herpes & HIV viruses
The next eleven slides are of different types of bacteria .
 slide 9
9. Strep, Staph, and Diplo bacteria		 slide 10
10. Spyrochete bacteria
 slide 11
11. Staphylococcus aureus
slide 12
12. Bacilli bacteria
 slide 13
13. Clostridia bacteria
 slide 14
14. Pseudomonas
 slide 15
15. Escherichia coli
slide 16
16. Gonnorhea bacteria
 slide 17
17. Bacteria live under your fingernails
 slide 18
18. Bacteria live on your skin
 slide 19
19. Pathogens
The next seven slides are of cyanobacteria. The cyanobacteria are photoautotrophs possessing chlorophyll a which carry on water-based photosynthesis, yielding O2 as a by-product.
 slide 20
20. Cyanobacteria
 slide 21
21. Nostoc communes
 slide 22
22. Zooming in on Nostoc

23. Nostoc heterocysts
 slide 24
24. Oscillatoria
slide 25
25. Cyanobacterial & algal blooms		 slide 26
26. Anabaena
slide 24
27. Chemosynthetic bacteria