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21 Cards in this Set

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Virus
A tiny, nonliving particle that invades and then reproduces inside a living cell
Host
An organism that provides a source of energy or a suitable environment for a virus or another organism to live
Parasite
An organism that lives inside or on another organism and takes food from the organism in or on which it lives
Bacteriophage
A virus that infects a bacteria
Bacteria
Single-celled organisms that lack a nucleus
Binary Fission
A form of asexual reproduction in which one cell divides to form two identical cells.
Asexual reproduction
A reproductive process that involves only one parent and produces offspring that are identical to the parent.
Antibiotic
A chemical that can kill bacteria without harming a person’s cells.
Antibiotic Resistance
The ability of bacteria to withstand the effects of an antibiotic
Cytoplasm
The region between the cell membrane and the nucleus
Conjugation
The process in which a unicellular organism transfers some of its genetic material to another unicellular organism.
Endospore
A small, rounded, thick-walled, resting cell that forms inside a bacterial cell
Flagellum
A long, whiplike structure that helps a cell to move
Ribosome
A tiny structure located in the cytoplasm of a cell where proteins are produced
Respiration
The process of breaking down food to release its energy
Sexual Reproduction
A reproductive process that involves two parents that combine their genetic material to produce a new organism, which differs from both parents
Pasteurization
A process of heating food to a temperature that is high enough to kill most harmful bacteria without changing the taste of the food
Toxin
A poison that can harm an organism.
Vaccine
A substance introduced into the body to stimulate the production of chemicals that destroy specific disease-causing viruses and organisms.
Infectious Disease
An illness that can pass from one organism to another. (contagious)
Decomposer
An organism that breaks down chemicals from dead organisms and returns important materials to the soil and water