1. Materials: new catalyst sheet and worksheet
Turn in biogeochemical cycles worksheet to the front tray.
Catalyst (5 min):
1. During the carbon cycle, in what form are carbon atoms generaly returned to the atmosphere?
Simple sugars
Carbon Monoxide
Methane
Carbon Dioxide
What process is it when water vapor changes into clouds?
How do animals get their nitrogen?

2. Materials: None
Get out Virus Transmission Lab Worksheet from yesterday. Catalyst (5 min): Brainstorm: Viruses are hard for human beings to treat. Why do you think this is? What do human beings use to treat viruses? Explain in 3-5 sentences.

3. Elite Eight Trait Check-Up
Respect the Threshold
Everyone on time?
Silent for First Five?
Be Prepared (2 min)
Seated
Have materials
Working on catalyst

4. Class Motto
If there is a problem, We look for a solution. If there is a better way, We find it. If we need help, We ask. If a teammate needs help, We give.

5. Announcements
SWIM MEETING WEDNESDAY at 8am! Sign up outside my door if interested! Get 3 forms from me

6. Objectives I can create a hypothesis regarding the spread of a virus.
I can draw conclusions regarding the origin of the virus and what leads to the spread of viral disease.

7. Objectives I can state the components of a virus.
I can explain why a virus is considered nonliving.
I can explain the differences between a virus and a bacteria.
I can explain how a virus replicates.

8. Virus Video

9. Coat of proteins (called a Capsid)
What is a virus?
Coat of proteins (called a Capsid)
Nucleic
Acid
Viruses are non-living infectious agents. Parts of a virus: 1. nucleic acid (DNA or RNA) 2. protein coat. Examples: influenza (the flu), the common cold, HIV, and the West Nile Virus

10. What is a virus?
Viruses come in many shapes, some of which are coated in a membrane, while others have tails.

11. What is a virus?
Viruses come in many shapes, some of which are coated in a membrane, while others have tails.

12. What is a virus? Bacteriophage: a virus that infects bacteria.
Bacteria and viruses both make human beings ill, but are different in many ways.

13. Why aren’t viruses considered living things?
Viruses are not living because:
Not made of cells
Do not grow or develop
Do not use energy
Cannot reproduce without a host

14. Close-up: How a virus uses host cells to reproduce
LYTIC CYCLE

15. Close-up: How a virus uses host cells to reproduce Lysogenic Cycle

16. How do we treat viruses? Difficult to treat
Try to prevent them with vaccines, which train our immune systems to fight viruses.
Also rest and fluids

17. Why is it hard to treat viruses?
They are constantly mutating.
Once scientists develop a vaccine, it is no longer effective.
Ex. Common Cold

18. Independent Practice: Venn Diagram
Make a Venn Diagram comparing and contrasting Bacteria and Viruses.
Use the following words:
Self replicating, vaccine, cell wall, microscopic, protein coat, prokaryotic, does not grow, needs a host cell, antibiotics, harmful, DNA, strep throat grows, cells, influenza

19. Independent Practice: Venn Diagram
self-replicating
vaccine
cell wall
protein coat
microscopic
cells
DNA
Influenza
prokaryotic
killed by antibiotics
harmful
Do not grow and develop
grow and develop
Need host cell
strep throat

20. PANTHER PASS What are the 2 parts of a virus?
Are viruses living or nonliving? Give 2 reasons why.
How do we treat viruses?
How does evolution make it hard to treat viruses?
Name one difference between a virus and a bacteria.