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Chapter 1 lesson 1
Science Notes Life Chap 1 lesson 1
Term | Definition |
---|---|
Organism | A living thing |
Cell | basic unit of structure and fuction in an organism |
Unicellular | a single celled organism, one cell |
Multicellular | composed of many cells |
Metabolism | the combination of chemical reactions through which an organism builds up or breaks down materials. |
Stimulus | a change in an organism's surroundings that causes the organism to react |
Response | a reaction to stimulus |
Development | process of change that occurs during an organism's life |
asexual reproduction | one parent, offsping is identical to parents |
sexual reproduction | Two parents, combined genetic material to create a new organism |
spontaneous generation | The mistaken idea that living things can arise from nonliving sources. |
controlled experiment | A series of tests that are identical except for one factor |
autotroph | An organism that makes it's own food |
heterotroph | An organism that cannot make it's own food |
homeostasis | The maintenance of stable internal conditions |