How can we help?

You can also find more resources in our Help Center.

14 terms

Biology Ch. 18: Viruses and Prokaryotes

Biology Ch. 18: Viruses and Prokaryotes
STUDY
PLAY
virus
An infectious particle made only of a strand of DNA (or RNA) surrounded by a protein coat.
pathogen
Anything that can cause a disease, such as bacteria, fungi, or a virus.
viroids
Infectious particles that cause disease in plants. They are made of single-strand DNA without a protein coat.
caspid
The part of a virus that holds DNA
lytic infection
A type of viral infection in which the host cell bursts, releasing new viral offspring to infect other cells.
infect
To cause disease
lysogenic infection
A type of infection where a virus combines its DNA into the host cell's DNA
host cell
A cell that a virus has attacked and is using to reproduce.
epidemic
A rapid outbreak of an infection. The flu is an example of an __________. In the U.S., 20 million people are infected with the flu every year.
rapid
To happen quickly
vaccine
A substance, often given as a shot, that causes the body to defend against viral diseases. For example, you got the DTAP ________.
flagellum
A long, whip-like structure outside of a cell that is used for movement, kind of like a tail that helps a bacteria swim.
toxin
A poison released by an organism. Bacteria can cause illness because it releases this into the bloodstream.
antibiotic
chemicals that kill or slow the growth of bacteria.