Test #2 Flashcards
What is a virus made out of
Nucleic acid (DNA or RNA) and a capsid
What kind of agent is a virus?
Infectious
What are the two kinds of nucleic acid
DNA or RNA
What is a capsid and what is it made of
An outer layer made of protein
Do viruses have organelles
No
Do they have a nucleus
No
They have cytoplasm
No
What kingdom do viruses belong to
None
Are viruses smaller than bacteria and human cells
Yes much smaller
What are retroviruses
A virus with RNA that forms into DNA
Viruses are ____
Parasites
What is a parasite
An organism that depends completely on a host
What is a bacteriophage
A virus that infects bacteria
What are the two ways that a virus replicates itself
Lytic or lysogenic cycle
In order for a virus to infect us what must happen
The virus and our cells must attach keys/knobs
How do other cells know that a certain cell belongs
Their keys
What is anything that makes us sick called
A pathogen
Viruses _________ the body’s natural balance
Disrupts
Wha is genetic engineering
When a harmless virus carries good genes into the cell
What are examples of human viruses
Warts, influenza, smallpox, Ebola, herpes, HIV, chicken pox, rabies
Who developed a smallpox vaccine
Edward Jenner
Do smallpox still exist
No
Just because you stop having symptoms does that mean that the virus is gone
No viruses can stay in your body for weeks or even months and some never leave
How do you treat a viral infection
A strong immune system
Vaccines and immunizations
Antivirals
