Cells in the body needs what for energy

Different Cell Types Require Different Fuel Molecules. Red blood cells rely on glucose for energy and convert glucose to lactate. The brain uses glucose and ketone bodies for energy. Muscle cells use fatty acids, glucose, and amino acids as energy sources.

In a linear equation or in an experiment there are two types of variables, the independent variable and the dependent variable. The value of the dependent variable is dependent on the changes made by the experimenter in the value of the independent variable. Thus, the answer to this item is letter A.