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Grade 7 Bacteria

From Bacteria to Plants Ch 2

QuestionAnswer
virus a small, nonliving particle that invades and then reproduces inside a living cell
host a living thing that provides a source of energy for a virus or an organism
parasites organisms that live on or in a host and cause harm to the host
bacteriophage a virus that infects bacteria
active virus a virus that immediately takes over the host cell's functions
hidden virus a virus that invades a cell, but remains inactive for awhile
cytoplasm the gel-like region inside a cell
ribosomes chemical factories inside cells where proteins are produced
flagellum a long, whiplike structure that extends out through the cell membrane and cell wall; used for movement
archaebacteria bacteria that live in extreme environments
eubacteria bacteria that live everywhere but extreme environments
binary fission a process 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 two parents combine their genetic material to produce a new organism which differs from both parents
conjugation one bacterium transfers some of its genetic material into another bacterial cell through a thin, threadlike bridge that joins the two cells
respiration the process of breaking down food to release its energy
endospore a small, rounded, thick-walled resting cell that forms inside a bacterial cell when conditions become unfavorable for the bacteria
decomposer organism that breaks down large chemicals in dead organisms into small chemicals
infectious diseases illnesses that pass from one organism to another
toxin a poison
antibiotic a chemical that can kill bacteria without harming a person's cells
Created by: Dcoleman
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