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8 Cards in this Set
- Front
- Back
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all livings things are composed of |
cells |
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realization of what a cell is began with ____ in the 17th centruy |
Robert Hooke |
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3 common characteristics of a cell: |
the outer boundary of a cell is the plasma membrane; all cells store genetic information in the forms of DNA; Everything inside the plasma membrane that is not a DNA or nucleus is cytoplasm |
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organelles |
structures found inside a cell; each performs a function necessary for cell to survive and perform its duties; organelles are used to build cells; ex nuclues containing DNA of a cell |
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cells |
composed of organelles; most basic unit of life because a cell divides to reproduce itself; cells build tissues; ex cardiac muscle |
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tissues |
composed of identical cells; four basic types on body; each type performs a specific function; tissues build organs; ex cardiac muscle tissue |
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organs |
composed of two or more types of tissue; these work together to perform a specific function; organs are used to build organ systems; ex the heart contracts to pump blood |
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systems |
group of organs with related functions; each system carries out one of the primary functions necessary to sustain life; ex the cardiovascular system carries blood throughout the body to deliver vital substances like oxygen |
