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science ch.2


virus A tiny, non-living particel that invades and then reproduces inside a living cell.
host An organism that provides a source of energy or suitable environment for a virus or another organism to live
parasite An organism that lives on or in a host and cause harm to the host
bacteriophage A virus that infects bacteria
bacteria single-celled organism that lack a nucleus
cytoplasm the region of a cell located inside the cell membrane or between the cell membraneand nucleus; contains an gel-like material
ribosome a tiny structure located in the cytoplasm of a cell where protiens are produced
flagellum A long whiplike structure that helps a cell to move
respiration The process of the breaking down food its energy
binary fission a form of asexual reprouduction in which one cell
asexual reproduction a reproductive process involes only one parent and produces offspring that are identical to the parent
sexual reproduction a reproductive process that involes two parents that combine their genetic material to produce a new organism, which differs from both parents
conjugation The process in which a unicellular organism transfers some of its genetic materialto another unicellular organism
endospore a small, rounded, thick-walled, resting cellthat forms inside a bacteria cell
pasteurization a process of heating food to a temperature that is high enough to kill most harmful bacteria without changing the tast 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 cell
antibiotic resistance The ability of bacteria to withstand the effects of antibiotic
vaccine a substance introduce into the body to stimulate the production of chemicals that destroy specific disease-causing viruses and organisms
Created by: aleeza9695