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Chapter 1 Lesson 1

What is life?

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 can’t make their own food
Homeostasis The maintenance of stable internal condition
Created by: 0003713stu