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7th grade - bacteria/virus/disease
STAR test studying - 7th grade level science - vocabulary - bacteria/virus/disease
15
Science
7th Grade
04/18/2012

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Term
bacteriophage
Definition
a virus that infects bacteria. its name means "bacteria eater'
Term
host
Definition
a living thing that provides a source of energy for a virus or an organism
Term
parasite
Definition
live in the host and can cause harm to the host
Term
virus
Definition
a small, nonliving particle that invades and then reproduces inside a living cell
Term
asexual reproduction
Definition
a reproductive system process that involves only one parent and produces offspring that are identical to the parent
Term
bacteria
Definition
single-celled organisms
Term
binary fission
Definition
a process in which one cell divides to form two identical cells
Term
conjugation
Definition
one bacterium transfers some of its genetic material into another bacterial cell through a thin, threadlike bride that joins the two cells. after the transfer, the cells separate
Term
cytoplasm
Definition
the region inside the cell membrane, contains a gel-like material
Term
decomposer
Definition
organisms that break down large chemicals in dead organisms into small chemicals
Term
endospore
Definition
a small, rounded, thick-walled, resting cell that forms inside a bacterial cell
Term
flagellum
Definition
a long, whip-like structure that extends from the cell membrane and passes through the cell wall
Term
respiration
Definition
the process of breaking down food to release its energy
Term
ribosome
Definition
chemical factories where proteins are produced
Term
sexual reproduction
Definition
involves two parents who combine their genetic material to produce a new organism, which differs from both parents
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