1. Tuesday, March 21,2017
Wednesday, March 20, 2017
Tuesday, March 21,2017
Wednesday, March 20, 2017
Microbes
Microbes
Essential Question: What characteristics distinguish protists, bacteria, and fungi?
Bacteria
Protists
Viruses
Parasites
Cellular Structure
Appearance
Shapes
Size Comparison
Reproduction
Rate of Reproduction
Helpful or Harmful
Warm up
Write a theory about the difference between a living thing and a nonliving thing. Describe how you would test your theory.
Homework:
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2. World of Microbes – Activity # 45
Protist
Bacteria
Virus
What are they?
How do they look?
Size Comparison
How do they reproduce?
How are they observed?
Considered a microbe? Why or Why not?
Are they helpful or harmful? Explain why you think so.

3. Bacteria Characterisics Reproduction No nucleus (prokaryotes)
Unicellular
3 main shapes
Spiral (also known as Spirillum)
Rod (Bacillus)
Round (Coccus)
Helpful
Decomposers of dead and decaying organisms
Used to make yogurt
Binary fission
Asexual = offsprings’ genetic info. is identical to the parent’s (clone)

4. Bacteria Diseases Streptococcus – causes strep throat
Lyme Disease caused by Spirilla
E. Coli – Causes food poisoning

5. Protists Characteristics Usually single-celled moist environment
Grouped by how they move and get food
Reproduction
Binary fission (asexual), budding (asexual)
Plant-like Protist called Volvox
Animal-like Protist called Paramecium
Animal-like Protist called Amoeba
Plant-like Euglena

6. Protist Examples Move with a whip like tail called flagella Euglena
Flagellates
Psudopodia
Ciliates
Move with a whip like tail called flagella
Euglena
Plant-like
Move with tiny hairs called cilia
Cilia help capture food
Paramecium feeding (animal-like)
Move with false feed called psudopods
Disease causer – Ameoba causing Dysentery

7. Fungi Characteristics Act as decomposers and absorbs nutrients
Help to break down dead organisms
Reproduction
Mostly asexual spores (many germinate with moisture) but some sexual (similar to fertilization)
spore dispersal

8. Fungi 3 groups: mushrooms, molds, yeasts
Not all are bad!
Disease Causing
3 groups: mushrooms, molds, yeasts
Yeast (single celled) is used to make bread
Penicillin (antibiotic) kills bacteria
Athlete’s Foot is a parasitic fungal infection caused by
causes scaling, flaking, and itch of affected areas

9. Parasites Characteristics a harmful relationship to the host
Reproduction
depends on the parasite (asexual or sexual)

10. Parasites Harmful by definition Tapeworms - from uncooked meat Fleas
Good Examples
Disease Causing
Harmful by definition
Tapeworms - from uncooked meat
Fleas
Bed bugs - suck blood from sleeping victims

11. VIRUSES Characteristics NOT living organisms
Needs a host cell to reproduce.

12. VIRUSES Attachment Injection Production Assembly Release Reproduction
Requires a host cell to make new viruses
5 steps to virus multiplication:
Attachment
Injection
Production
Assembly
Release

13. VIRUSES West Nile virus Influenza
Helpful Virus Examples
Bad Examples
Used to transfer helpful genes into cells – gene therapy
West Nile virus
Influenza

14. Assessment Taxonomy, Germ Theory, and Microbes Quiz in Schoolnet 15 Questions