UNIT 2

1. compound with an amino group on one end and a carboxyl group on the other end
6. process that changes, or transforms, one set of chemicals into another set of chemicals
8. substance that speeds up the rate of a chemical reaction
9. reactant of an enzyme-catalyzed reaction
10. a large organic molecule made up of many atoms (like proteins)
11. macromolecule made up of amino acids
13. compound made up of carbon, hydrogen, and oxygen atoms; type of nutrient that is the major source of energy for the body
15. simple sugar molecule
17. a complex carbohydrate made up of many monosaccharides
18. molecules composed of many monomers; makes up macromolecules
20. substance formed as a result of a chemical reaction

2. small chemical unit that makes up a polymer
3. energy that is needed to get a reaction started
4. a reaction that absorbs energy (absorbs heat)
5. a reaction that releases energy (gives off heat)
7. elements or compounds that enter into a chemical reaction
12. macromolecules containing hydrogen, oxygen, nitrogen, carbon, and phosphorus
14. biological catalysts
16. subunit of which nucleic acids are composed; made up of a 5-carbon sugar, a phosphate group, and a nitrogenous base
19. macromolecule made mostly from carbon and hydrogen atoms; includes fats, oils, and waxes