Food and Biomolecules

2. The basic unit of a lipid, consisting of one glycerol molecule and three fatty acids.
4. A polysaccharide used for carbohydrate storage in animals and fungi.
7. The simplest unit of a carbohydrate consisting of a single sugar molecule, such as glucose.
8. A chain consisting of many amino acids joined together by peptide bonds.
12. A structural polysaccharide found in the cell walls of plants.
13. A fibrous structural protein found in hair, nails, and feathers.
15. The maintenance of a constant internal environment within a living organism.
16. An organic compound required in tiny amounts for the correct functioning of the body.
17. Metabolic reactions that use energy to build larger molecules from smaller ones.
18. A biological catalyst made of protein that speeds up the rate of chemical reactions.

1. A carbohydrate formed by the joining of two monosaccharide units, such as maltose.
3. Metabolic reactions that release energy by breaking down large molecules into smaller ones.
5. A lipid molecule where one fatty acid is replaced by a phosphate group, forming cell membranes.
6. Inorganic nutrients required by the body in small amounts for structural or metabolic roles.
9. A complex carbohydrate made of many monosaccharide units linked together, such as starch.
10. The sum of all chemical reactions that occur within a living organism.
11. An organic compound produced by a living organism, such as a carbohydrate or protein.
14. A chemical messenger produced by an endocrine gland that regulates body functions.