1. Viruses Doesn’t belong to any kingdom -It’s not a plant or an animal.
-It’s not a fungi, protist, or bacteria.
WHAT IS A VIRUS?

2. A virus is an _______agent made up of ________acid (DNA ___ RNA) wrapped in a _______coat called a_______.
Viruses have no______, no_______, no ________or
_____________—Non-cellular
This is why it does NOT belong to any kingdom. vs

3. Viruses with ____that transcribe into DNA are called _____________.
Viruses have either DNA or RNA but NOT both.
Viruses with ____that transcribe into DNA are called _____________.
Viruses are like parasites—they depend entirely upon another living organism (a______) for its existence in such a way that it _______ that organism.
HIV Infected Cell

4. Bacteriophage—viruses that infect_______
Capsid (protein coat)
inside contains either
RNA or DNA
2. Flu (influenza), HIV
DNA or RNA
Surface Marker
Capsid (protein coat)

5. Bacteriophage—a virus that infects bacteria (bacteria is the host)
Capsid
Nucleic Acid
Bacteriophage—a virus that infects bacteria (bacteria is the host)

6. C. Nonviral particle
Has _______only, no DNA or RNA (cause of mad cow disease and Creutfeldt-Jacob disease in humans)—________(affects the brain and is almost always fatal)

7. D. __________is how a virus spreads.
A virus _________reproduce by itself—it must invade a host cell and take over the cell __________eventually causing ________of the cell and killing it. (The virus enters a cell, ___________of itself and causes the cell to _______releasing more viruses.)
DNA/RNA is copied.
DNA/RNA injected into cell.
Virus attaches to cell.
Step 3
Step 2
Step 1
Virus copies itself.
Cell bursts (lyses) and releases new viruses.
Step 4
Step 5

8. Certain viruses can only attack certain cell types
Certain viruses can only attack certain cell types. They are said to be______.
Example: The rabies virus only attacks _____or _______cells.
Surface Markers
Virus
Receptor Sites
It’s like the pieces of a puzzle. The ends have to match up so only certain pieces fit.
Cell

9. A virus recognizes cells it can infect by matching its ___________with a ____________on a cell.

10. Importance: Beneficial: *Harmful Causes disease—_____________
Disease producing agent—____________
Human Diseases: Warts, common cold, Influenza (flu), Smallpox, Ebola, Herpes, AIDS, Chicken pox, Rabies
Viruses disrupt homeostatis in the body.
Viruses can be prevented with ________but NOT treated with antibiotics.
(antibiotics treat_________________
Beneficial:
__________________—harmless virus carries good genes into cells.

12. Virus Living Cell Structure Reproduction Genetic Material
Growth and Development
Obtain and Use Energy
Response to Environment
Change over time

13. Are viruses living? NO ONE
How many characteristics of life do viruses possess?
ONE
*Genetic Material
Are viruses living? NO