1. Viruses & Bacteria Mr. Skirbst Life Science Topic 10

2. Kingdom Monera

3. Collecting Bacteria 1.They are all around us, all the time! 2.Some are dangerous! Be careful. 3.To be observed, we need a colony. 4.We can incubate them in agar. 5.They need to be sealed shut. 6.They can drown in their own waste 7.Store them upside down.

4. Collecting Bacteria

5. Kingdom Monera Single-celled organism that lacks a nucleus

6. Kingdom Monera Single-celled organism that lacks a nucleus Moneran = bacteria

7. Typical Structure cytoplasm hereditary material flagella capsule cell wall cell membrane

8. Typical Structure Endospore – “inside seed” - some bacteria have this with hereditary material

9. Bacterial Shapes Cocci – spherical Bacilli – rod Spirili – spiral

10. Life Functions Autotroph

11. Life Functions Autotroph – makes own food * plant-like * produces oxygen (O 2 )

12. Life Functions Heterotroph

13. Life Functions Heterotroph – can’t make own food

14. Life Functions Heterotroph – can’t make own food * parasite (live off a host) * decomposer (live off dead / decaying matter)

15. Life Functions Helpful Produce O 2 Digest food Antibiotics

16. Life Functions Helpful Produce O 2 Digest food Antibiotics Harmful Cause disease (strep, Lyme’s, Plague) Break down asphalt

17. Viruses

19. -Tiny particles that invade living cells

20. Viruses -Tiny particles that invade living cells -Do NOT perform functions of living cells (are not living)

21. Viruses -Tiny particles that invade living cells -Do NOT perform functions of living cells (are not living) -Need a host to reproduce

22. Size of Viruses

23. -Measured in nanometers (billionths of a meter) (much smaller than cells)

24. Structure of Viruses

25. 1.Outer coat of protein (provides protection)

26. Structure of Viruses 1.Outer coat of protein (provides protection) 2.Inner core of hereditary material (controls “reproduction”)

27. Reproduction of Viruses

28. 1.Attaches to host cell

29. Reproduction of Viruses 1.Attaches to host cell 2.Injects hereditary material

30. Reproduction of Viruses 1.Attaches to host cell 2.Injects hereditary material 3.Controls cell functions

31. Reproduction of Viruses 1.Attaches to host cell 2.Injects hereditary material 3.Controls cell functions 4.Reproduces inside cell

32. Reproduction of Viruses 1.Attaches to host cell 2.Injects hereditary material 3.Controls cell functions 4.Reproduces inside cell 5.Explodes cell and spreads

33. Reproduction of Viruses

34. Ants In Cars Race Everywhere