Science Test Chapter 2 Flashcards
Are viruses living or non-living?
Non-living
What is a parasite?
An organism that lives on or in a host and causes it harm.
What is pasteurization?
A process that is used to kill bacteria in foods such as milk and juice.
Bacteria reproduce sexually through what?
Conjugation
Protozoans, such as ciliates and flagellates, are what type of protists?
Animal-like Protists
What are pigments?
Chemicals that produce color.
Spores are produced in reproductive structures called what?
Fruiting bodies
Define virus
A tiny, non-living particle that enters and then reproduces inside a living cell.
Define host
An organism that provides a source of energy for a virus or another organism.
Define parasite
An organism that lives on or in a host and causes it harm.
Define vaccine
A substance introduced in the body to help produce chemicals that destroy specific viruses.
Define cytoplasm
The region inside the cell membrane, that contains a gel-like fluid that moves structures throughout the cell.
Define ribosomes
