1. A fat molecule is composed of two types of smaller molecules, including only one molecule of . 2. A fat molecule also includes one, two, or three molecules. 3. A fat molecule with only one fatty acid is called a . 4. A fat molecule with three fatty acids is called a triacylglycerol, or a . 5. A fatty acid includes a carboxyl group (-COOH) at one end as well as a long . 6. The hydrocarbon chains found in fats store a lot of energy. They also make fats , or insoluble in water. Fill in above blanks. a. hydrophilic b. fatty acid c. triglyceride d. monoglyceride e. glycerol f. hydrocarbon chain g. hydrophobic