24

Chemical Composition of the Body

CHAPTER OUTLINE

2.1 Atoms, Ions, and Chemical Bonds 25

Atoms 25

Chemical Bonds, Molecules, and Ionic

Compounds 26

Acids, Bases, and the pH Scale 29

Organic Molecules 30

2.2 Carbohydrates and Lipids 33

Carbohydrates 33

Lipids 36

2.3 Proteins 41

Structure of Proteins 41

Functions of Proteins 44

2.4 Nucleic Acids 44

Deoxyribonucleic Acid 44

Ribonucleic Acid 46

Summary 47

Review Activities 48

CHAPTER

2