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Viruses and Bacteria

Viruses are ----- particles. microscopic
What do viruses do to cells? invade and destroy them
Viruses are made up of what? genetic material and a protein coat
Viruses are parasites. What is a parasite? an organism that lives in or on another organism and benefits by taking in nutrients at the host's expense
Are Viruses living? no
What are two living traits of a virus? 1. have genetic material 2. Can reproduce
Do viruses have cells? no
Where is the only place viruses can reproduce? inside living cells
What are the five steps in a viruses reproduction and what happens in each step? adsorption- virus attaches itself to the cell,entry- virus enters the cell and some of it's genetic material,replication- cell reproduces and makes copies of the virus4.assembly- the copies assemble and create many viruses,release- virus destroys the cell
What are six diseases caused by viruses? measles, influenza, mumps, cold, flu, and polio
What insect causes yellow fever? mosquitoes
What does HIV stand for? Human immunodeficiency virus
HIV causes AIDS. What does AIDS stand for? Acquired immune deficiency syndrome
What does the T-cell(white blood cell) do? it fights infections found in the body
How does HIV cause AIDS? it destroys the T-cells
What does a person have if their number of T-cells fall bellow a certain level? Full blown AIDS
What are the five ways HIV can be transmitted? 1. Mother to unborn child 2. IV drug use 3. blood transfusion 4. exchange of bodily fluid(blood) 5. unprotected sex
What are cocktails? a treatment for AIDS
What is a viral disease? a disease caused by a virus
What is the only defense against viral diseases? a healthy and strong immune system
What do vaccinations do? build up your immune system
What do vaccinations contain? the virus or other disease causing agent that are dead or weakened
Viruses cause the body to form antibodies. What do antibodies do? protect against further infection
When was the last case of small pox in the U.S. 1949
What is the most dangerous group of viruses? Filovirus
What do filoviruses do? produce outbreaks of hemorrhagic fever
What does hemorrhagic fever do? attack connective tissues, which causes massive bleeding
What is an example of hemorrhagic fever? Ebola virus
Created by: ygfleisch