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Chap 1 lesson 1
What is life
Term | Definition |
---|---|
Organism | A living thing. |
Cell | The basic unit of structure and function and living things. |
Unicellular | Made of a single cell. |
Multicellular | Consisting of many cells. |
Metabolism | A combination of chemical reactions through which an organism builds up or breaks down materials. |
Stimulus | Any change or signal the environment that can make an organism react in some way |
Response | An action or a change in behavior. |
Development | The process of change that occurs during an organism's life, producing a more complex organism. |
Spontaneous generation | The mistaken idea that living things can arise from nonvolving sorces. |
Controlled experiment | A scientific control that is designed to minimize the effects of variables other then the independant varible. |
Autotrophs | Organism's that make their own food. |
Hetertrophs | Organism's that cannot make their own food. |
Homeostatis | The maintanence of stable internal conditions. |
Asexual reproduction | Only involves one parent and producues offspring that are identical to the parent. |
Sexual reproduction | Involves two parents and combines their genetic material to produce a new organism that differs from both parents. |