1. Page 44-53 Practice problems: pg 53, #1,3,5,8,10
The Prokaryotes
Page 44-53
Practice problems: pg 53, #1,3,5,8,10

2. Activity – What do you think
Read the section on page 44 entitled
“How Important Are Microscopic Organisms”
Copy questions 1-4 into your notes.
Answer to the best of your knowledge

3. Prokaryotes
Single-celled organisms that lack membrane-bound organelles

4. Prokaryotes Smallest living organisms Found living everywhere on Earth
Some are:
Heterotrophs:
Autotrophs:
Chemotrophs:

5. Roles of Prokaryotes
Pathogens:
Examples:
Decomposers:
Food spoilage

6. Roles of Prokaryotes

7. Roles of Prokaryotes Example: in the intestines of animals
Live together with other organisms
Mutualistic relationship:
Example: in the intestines of animals
The bacteria get a __________________
The animals get __________________________________ __________________________________

8. Roles of Prokaryotes Live together with other organisms Example:
associated with
plant roots
What do each
organism get?

9. Roles of prokaryotes Used in food production
Cheese, yogurt, soy sauce, etc
Example: Brevibacterium linens is one of the bacteria involved in the production of blue cheese
Most recently, bacteria have been utilized for their ability to produce chemicals like ___________ and ___________

10. Kingdoms of Prokaryotes
Split into:
Eubacteria (true bacteria)
Archaea (ancient organisms)

11. Eubacteria
Capsule:
Cell wall:

12. Eubacteria
Chromosome:
Plasmid:
Flagellum and Pili:

13. Eubacterial Metabolism
Aerobes: organisms that _____________ oxygen
Why?
Anaerobes: organisms that _____________ oxygen

14. Eubacterial Metabolism
Obligate aerobes:
Facultative aerobes:
Obligate anaerobes:

15. Cell Division Cells divide by binary fission Definition?
How is each daughter cell related?

16. Cell Division - Mutations
Occasionally a bacteria will make an error (mutation) while copying it’s DNA and then the daughter cell have a different DNA
What is the effect of mutations? Is this a good or bad thing?

17. Increasing Genetic Diversity
Conjugation:
Transformation:
What is the purpose of these processes?

18. Archaea
Extremophiles

19. Types of Archaea
Methanogens

20. Types of Archaea
Halophiles

21. Types of Archaea
Thermophiles

22. Types of Archaea
Psychrophiles