1. Viruses, Bacteria & Protists, OH MY

2. Parts of a virus
Different kinds of viruses have different structures

3. Parts of a virus A protein coat = capsid
But all viruses have:
A protein coat = capsid
Nucleic acid (DNA or RNA)  genetic information

4. How viruses reproduce Cannot multiply by themselves Use cells as hosts
Reprogram cell to create more viruses using their genetic code

5. Let’s compare! PROKARYOTE EUKARYOTE No nucleus Nucleus Single-celled
No membrane-bound organelles
Nucleus
Single- or multi-cellular
Membrane-bound organelles

6. Prokaryote example
BACTERIA!

7. Prokaryote parts
CAPSULE

8. Prokaryote parts
CELL WALL

9. Prokaryote parts
CELL MEMBRANE

10. Prokaryote parts
PILUS (PILI)

11. Prokaryote parts
NUCLEOID (DNA)

12. Prokaryote parts
RIBOSOMES

13. Bacteria parts
FLAGELLUM

14. Protista Kingdom
Review!

15. Protista Kingdom Review! Eukaryote
Unicellular (sometimes multicellular)
Auto-/heterotrophic

16. Protist Parts Nucleus Mitochondria Chloroplasts (autotrophic only)
Flagellum
Cilia Used for motility
Pseudopods = also for engulfing food particles (heterotrophic)
Contractile vacuole = water balance (osmoregulation)
Eyespot = detecting light

17. Protist Parts - euglena

18. Protist Parts

19. Protist Parts

20. Protist Parts

21. Protist Parts - paramecium

22. Protist Parts - amoeba