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Science Vocab Chapter 2
21 cards·by Qua
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
parasite
an organism that lives on or in a host and causes harm to the host
bacteriophage
a virus that infects bacteria
bacteria
single celled organism that lack a nucleus: prokaryotes
cytoplasm
the region of a cell located inside the cell membrane (in prokaryotes) or between the cell
membrane and nucleus (in eukaryotes) ; gel-like
ribosome
tiny structure located in the cytoplasm of a cell where proteins are produced
flagellum
a long, whip-like structure that helps a cell to move
respiration
the process of breaking down food to release it's energy
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
sexual reproduction
a reproductive process that involves two parents that combine their genetic material to
produce a new organism, differs from both parents
conjugation
the process in which a uni-cellular organism transfers some of it's genetic material to
another uni-cellular organism
endospore
a small, rounded, thick-walled, resting cell that forms inside a bacterial cell
pastuerization
a process of heating food to a temp. that is high enough to kill most harmful bacteria without
changing the taste of the food
decomposer
an organism that breaks down chemicals from dead organisms and returns important materials
to the soil and water
infectious disease
an illness that can pass from one organism to another
toxin
a poison that can harm an organism
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
vaccine
a substance introduced into the body to stimulate the production of chemicals that destroy
specific disease causing viruses and organisms