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Science -Term1 Vocab

QuestionAnswer
organism a living thing
cell the basic unit of structure and function
unicellular single celled organism
multicellular an organism composed of many cells
autotroph an organism that makes its own food
heterotroph organism that cannot make its own food
homeostasis the maintenance of stable conditions
classification levels: kingdom, phylum, class, order, family, genus
taxonomy The scientific study of how things are classified
binomial nomenclature the naming system Linnaeus used, the word binomial nomenclature means two names
Virus tiny nonliving particle that enters and then reproduces inside a living cell
Host an organism that lives in or on a host and causes it harm
flagellum a long whiplike structure that helps a cell to move (found on bacteria cells)
bacteria single celled organisms, prokaryotes, genetic material not contained by a nucleus
binary fission bacteria's way of reproduction; one cell divides to form two identical parent cells (form of asexual reproduction)
asexual reproduction the reproductive process that involves only one parent and produces offspring that are identical to the parent
sexual reproduction involves two parents who combine their genetic material to produce a new organism
conjugation process in which a bacterium transfers some genetic material into another bacterium through a thin threadlike bridge that connects the two cells
endospore a small, rounded, thick-walled resting cell that forms inside a bacterial cell (contains cell’s genetic material and some of its cytoplasm
infectious disease an illness that can pass from one organism to another
antibiotic resistance the ability of bacteria to withstand the effects of an antibiotic
prokaryote an organism that whose cells lack a nucleus and some other cell structures
nucleus the dense area in a eukaryote cell that contains nucleic acids, the chemical instructions that direct the cell’s activities.
eukaryote an organism whose cells contain nucli
algae plant-like protists
Created by: ambrosinoc
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