1. Viruses
Are they alive ?

2. Why would some scientists debate that a virus was living?
What is a Virus?
A non – living, infectious particle made only of a strand of DNA or RNA surrounded by a protein coat. This protein coat is known as a capsid.
Why would some scientists debate that a virus was living?

3. Why are viruses considered non-living?
Viruses can not reproduce on
their own. A host cell is needed
for a virus to reproduce and make
proteins.

4. A virus is referred to as a pathogen
A virus is referred to as a pathogen. A pathogen is any organism or nonliving particle that can cause an infectious disease.

5. Tobacco Mosaic
Bacteriophage
Influenza

6. How do Viruses make us sick?
Viruses cause 2 types of infections. Use your book and write the analogies used to describe each. Refer to pg 549

7. How do you protect yourself from a virus?
Get
Vaccinated!!

8. What are Microbes?
Microbes are tiny organisms that can only been seen under a microscope.
They are EVERYWHERE and can be both beneficial and harmful.
E Coli
Oil Eating Bacteria

9. Archaebacteria & Eubacteria
Characteristics of Bacteria
Bacteria are microbes.
Domains: Archae & Bacteria
Kingdoms: Archaebacteria & Eubacteria
Prokaryotic Cells: cells without a defined nucleus and cell organelles
Unicellular Organisms
Microorganisms
Cyanobacteria

10. Peptidoglycan Helps classify the 2 bacteria kingdoms.
Eubacteria has peptidogycan in the cell wall. Gram stains purple.
Archaebacteria does not have peptidoglycan in the call wall. Gram stains pink.
Archaebacteria
Eubacteria

11. Archaebacteria & Eubacteria
3 Basic Shapes
Cocci
(sphere)
Bacilli
(rod)
Spirilla
(spiral)

12. Archaebacteria & Eubacteria

13. How will a doctor treat a patient with a bacterial infection?
Prescribe Antibiotics

14. Live Bacteria Videos Rowland Institute At Harvard
Swarming E. Coli
Swimming Synechococcus
Swimming Rhodobacter