The mystery food sample contains a lipid because it was red in contact with the indicator Sudan Red which is an indicator of lipids. The food sample was also tested with the following indicators:
and
No color change was present with the other indicators; therefore, the mystery food sample contains only
and no other macromolecules.

Consider the following planned experiment. factor experimental group control group light exposure tots of sun tots of sun amount of water weekly weekly type of soil nutrient rich nutrient rich size of pot large which variable is being tested in this experiment? small a. size of pot b. type of soil c. light exposure d. amount of water