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

1. glycerol

2. fatty acid

3. monoglyceride

4. triglyceride

5. hydrocarbon chain

6. hydrophobic

Explanation:

A fat molecule is made up of two parts with one part been the glycerol backbone and three fatty acid tails. A fat molecule with just one fatty acid chain can be regarded as a monoglyceride and with three fatty acids, you have a triglycerides.

One end of the fatty acid is made up of even number carbon-carbon chains at one end and the -COOH on the other end making it a carboxylic acid. The hyrocarbon chains of the fatty acid is hydrophobic in nature and always cluster up in molecules such as in the biological cell meembrane.

answer: a. a gene that causes a specific trait.