Answer:
1. Fuel.
2. Glycerol.
3. Oxidized.
4. Fatty acid.
Explanation:
The biomolecules are the important chemical component of the living organisms. Four important biomolecules of the living organisms are carbohydrates, proteins, fats and lipids.
Carbohydrates and lipids are used to generate energy and acts as a body fuel of the organisms. The sugars and amino acids can be used for the synthesis of glycerol. Lipolysis involves the breakdown of the fatty acid and gets oxidized by the enzymes. These steps are used as the initial steps for the synthesis of the fatty acid.
Thus, the answer is 1. Fuel.
2. Glycerol.
3. Oxidized.
4. Fatty acid.