An organism that can make its own food by using energy fro its surroundings 

An organism that eats other organisms or organic matter

An organism that gets energy by breaking down the remains of dead organisms or animal wastes and consuming or absorbing the nutrients

A molecule that is made up of amino acids and that is neede to build and repair body structures and to regulate processes in the body

A class of molecules that includes sugars, starches, and fibers

A fat molecule that has similar properties

A lipid that contains phosphorus and that is a structural component in cell membranes 

Adenosine triphosphate, a molecule that acts as the main energy source for cell processes

A molecule made up of subunits called nucleotides