Select from: 1). Energy; 2). natural; 3). mineral; 4). endogenous; 5). Break down food; 6). it needs them; 7). sweat glands; 8). Energy.;
Given those answer options, answer the question: Fact 1: Insulin helps cells take up glucose from the blood. Fact 2: Insulin made by a person's own pancreas is endogenous insulin. Given the two facts above, what type of compounds produced by a person's pancreas help cells take up compounds?
A:
4).