Wild animal meat (small game animals), various vegetables, (corn, squash, etc.)
Answer:
when a concentration gradient exists and more of the substance is on the inside of the cell
Explanation:
Active transport moves substances against the concentration gradient, from an area of low concentration to an area of high concentration. It requires the use of energy, usually in the form of ATP.
Hope that helps.
A molecule is a group of atoms held together by chemical bonds in a stable association