| A | B |
| organism | a living thing with cells |
| life span | a sequence of stages during the life of a living thing |
| carbohydrate | made only of carbon, hydrogen, and oxygen atoms |
| response | a life response that requires energy |
| protein | made of amino acids |
| lipid | fat where energy is stored; makes membranes for cells |
| nucleic acids | a molecule which contains the information of a cell DNA & RNA |
| four main functions | use energy; respond to the environment; manufacture materials; reproduce |