click below
click below
Normal Size Small Size show me how
Chapter 1 Lesson 1
What is life?
Term | Definition |
---|---|
Cell | The basic unit of structure and function in living things |
organism | a living thing |
unicellular | single celled organisms |
multicellular | an organism composed of many cells |
metablolism | 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 | an action or change in behavior that occurs as a result of a stimulus |
development | the process of change that occurs during an organism's life producing a more complex organism |
asexual reproduction | A reproduction process that involves only one parent and produces offspring that are identical to the parent |
Sexual production | Involves two parents and combines their genetic material to produce a new organism that differs from both parents |
Spontaneous generation | The mistaken idea that living things arise from non living sources |
Controlled experiment | An experiment in which only one variable or is manipulated at a time |
Autotroph | Organisms that make their own food |
Heterotrophs | Organisms that canât make their own food |
Homeostasis | The maintenance of stable internal condition |