1. Good Afternoon!
Warm Up: Scientific Investigation vocabulary sheet on the front desk…front page only
Keep your homework (we will discuss)
Today:
Observation vs. Inference notes
Practice
Tennis Ball activity
Class work
Remind. Com (Remind me to show you at the end!)

2. Group Work You will work with students in your row.
Do not write on the “classroom copy” packet! Use this data to discuss and answer the questions.
You will be turning in the two answer sheets for a grade.
You will not have the entire class to do this. Work diligently, please.

3. Group Work
Use the vocabulary list to make flash cards only of the words you don’t already know.
Cut/paste characteristics of Bacteria and Viruses on the Venn Diagram. (I’ll check and you’ll keep in your notebook.)
“Design Your Own Virus”
Answer questions on the sheet. (Turn in)
Construct virus using Play Doh 
Shape must include one or more of the shapes provided on the “Virus Structure” sheet.

4. Good Afternoon Warm Up Today:
1. All of the following are examples of ____________.
Body Temperature
Blood pressure
Blood pH
O2 and CO2 concentration
Osmoregulation-Water balance
Blood glucose
2. List the characteristics that all living things share.
3. The following picture is an example of _______________.
4. How are digestion and synthesis different?
5. The energy needed to fuel the body is obtained by the oxidation of food in what process?
Today:
Virus Notes
Virus Group Activity
Quiz
Time to work on your CW and HW

6. Viruses

7. What is a virus? A tiny, non-living particle.
Enters cells, takes over and reproduces inside of them.
An invader of cells.

8. Characteristics of Viruses
Are not cells.
Do not use their own energy to grow or respond to their surroundings.
Can not make food or waste.
Viruses can and do multiply

9. Viruses can ONLY multiply inside of a living HOST CELL.

10. PARASITE = an organism that lives on or in a host and causes harm.
HOST = an organism that provides a source of energy for a virus or another organism.
PARASITE = an organism that lives on or in a host and causes harm.

11. A virus that only infects bacteria.
Viral Shapes
Bacteriophage
A virus that only infects bacteria.

13. Examples of Viruses

15. Viruses are VERY small and can not be seen without a powerful microscope.

16. Viruses have a protein coat and genetic material.

17. How come we can not get the Tobacco Mosaic Virus?
Viruses can only infect the host that they are intended for.
The proteins on the surface of the virus fit the proteins on the surface of a host cell like this key fits this lock.

19. Active Viruses Enter cell. Take over cell functions.
Produces more viruses.
Cell bursts releasing lots of new viruses.
Those viruses infect more cells.

21. between an active and hidden
What is the difference
between an active and hidden
virus?
The genetic material of a hidden virus can “hide” inside of the cell.
It is undetected or hidden so the cell can not attack the virus!
You can NEVER get rid of a hidden virus…EVER.

22. Jenner Creator of 1st vaccine with smallpox
Injected a little boy with live cow pox.
Sent him into a smallpox infected area.

23. HPV (Human Papilloma Virus)*
Vaccines of Today
Measles
Mumps
Rubella
Polio
Flu
Chicken Pox*
HPV (Human Papilloma Virus)*
Hepitis
Rabies

24. Lytic and lysogenic cycles
Release:
New viruses
leave host cell. 5.
Bacterial cell wall
Bacterial chromosome
capsid
nucleic acid
Attachment:
Capsid combines
with receptor. 1.
Maturation:
Assembly of viral
components. 4.
a. Lytic cycle
Penetration:
Viral DNA
enters host. 2.
Biosynthesis:
Viral components
are synthesized. 3.
b. Lysogenic cycle
prophage
Integration:
Viral DNA passed on
when bacteria reproduce.
Copyright © The McGraw-Hill Companies, Inc. Permission required for reproduction or display.

25. Bacterial cell wall capsid Bacterial chromosome nucleic acid 1.
Attachment:
Capsid combines
with receptor. 1.
Copyright © The McGraw-Hill Companies, Inc. Permission required for reproduction or display.

26. Bacterial cell wall capsid Bacterial chromosome nucleic acid 1.
Bacterial cell wall
Bacterial chromosome
capsid
nucleic acid
Attachment:
Capsid combines
with receptor. 1.
Penetration:
Viral DNA
enters host. 2.
Copyright © The McGraw-Hill Companies, Inc. Permission required for reproduction or display.

27. Bacterial cell wall capsid Bacterial chromosome nucleic acid 1.
Bacterial cell wall
Bacterial chromosome
capsid
nucleic acid
Attachment:
Capsid combines
with receptor. 1.
a. Lytic cycle
Penetration:
Viral DNA
enters host. 2.
Biosynthesis:
Viral components
are synthesized. 3.
Copyright © The McGraw-Hill Companies, Inc. Permission required for reproduction or display.

28. Bacterial cell wall capsid Bacterial chromosome nucleic acid 1. 4.
Bacterial cell wall
Bacterial chromosome
capsid
nucleic acid
Attachment:
Capsid combines
with receptor. 1.
Maturation:
Assembly of viral
components. 4.
a. Lytic cycle
Penetration:
Viral DNA
enters host. 2.
Biosynthesis:
Viral components
are synthesized. 3.
Copyright © The McGraw-Hill Companies, Inc. Permission required for reproduction or display.

29. 5. New viruses leave host cell. Bacterial cell wall capsid
Release:
New viruses
leave host cell. 5.
Bacterial cell wall
Bacterial chromosome
capsid
nucleic acid
Attachment:
Capsid combines
with receptor. 1.
Maturation:
Assembly of viral
components. 4.
a. Lytic cycle
Penetration:
Viral DNA
enters host. 2.
Biosynthesis:
Viral components
are synthesized. 3.
Copyright © The McGraw-Hill Companies, Inc. Permission required for reproduction or display.

30. 5. New viruses leave host cell. Bacterial cell wall capsid
Release:
New viruses
leave host cell. 5.
Bacterial cell wall
Bacterial chromosome
capsid
nucleic acid
Attachment:
Capsid combines
with receptor. 1.
Maturation:
Assembly of viral
components. 4.
a. Lytic cycle
Penetration:
Viral DNA
enters host. 2.
Biosynthesis:
Viral components
are synthesized. 3.
b. Lysogenic cycle
Integration:
Viral DNA passed on
when bacteria reproduce.
Copyright © The McGraw-Hill Companies, Inc. Permission required for reproduction or display.

31. 5. New viruses leave host cell. Bacterial cell wall capsid
Release:
New viruses
leave host cell. 5.
Bacterial cell wall
Bacterial chromosome
capsid
nucleic acid
Attachment:
Capsid combines
with receptor. 1.
Maturation:
Assembly of viral
components. 4.
a. Lytic cycle
Penetration:
Viral DNA
enters host. 2.
Biosynthesis:
Viral components
are synthesized. 3.
b. Lysogenic cycle
prophage
Integration:
Viral DNA passed on
when bacteria reproduce.
Copyright © The McGraw-Hill Companies, Inc. Permission required for reproduction or display.

32. 5. New viruses leave host cell. Bacterial cell wall capsid
Release:
New viruses
leave host cell. 5.
Bacterial cell wall
Bacterial chromosome
capsid
nucleic acid
Attachment:
Capsid combines
with receptor. 1.
Maturation:
Assembly of viral
components. 4.
a. Lytic cycle
Penetration:
Viral DNA
enters host. 2.
Biosynthesis:
Viral components
are synthesized. 3.
b. Lysogenic cycle
prophage
Integration:
Viral DNA passed on
when bacteria reproduce.
Copyright © The McGraw-Hill Companies, Inc. Permission required for reproduction or display.

33. Questions to Accompany Viruses Power Point
1. What is a virus?
2. Is virus alive?
3. Name 2 characteristics of viruses.
4. What is the difference between a host and a parasite?
5. List 3 viruses that were named in the presentation.
6. Can a tobacco mosaic virus infect a human? Why or why not.
7. What is the difference between an active virus and a hidden virus?
8. What did the scientist named Jenner discover?

34. Answer Key 1. What is a virus?
A virus is a non-living particle that takes over a host cell and reproduces.
2. Is virus alive?
That is still debated. It is generally considered non-living because it cannot reproduce on its own.
3. Name 2 characteristics of viruses.
Are not cells, cannot make food or waste, do not use their own energy.
4. What is the difference between a host and a parasite?
The host is infected and harmed by the parasite. It takes over the cell and uses the cell to its own benefit.

35. 5. List 3 viruses that were named in the presentation.
Ebola, Hanta, Smallpox, Flu…
6. Can a tobacco mosaic virus infect a human? Why or why not.
No it cannot. The host range for that virus is a plant. It might be able to infect different types of plants but not animals.
7. What is the difference between an active virus and a hidden virus?
An active virus gets into the cells of the host and makes new viruses. The host cells are destroyed very quickly. A hidden virus gets into the genetic material of the host cell. It can wait for a very long time to become active. Even when it does, other cells are already infected with hidden viruses and do not become active.
8. What did the scientist named Jenner discover?
Jenner is credited with creating the very first vaccine (using cowpox).