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The Chemistry of Life - Intro
BIOL 1306
Ebeling
Learning Objectives
• Explain the chemical nature of biological molecules
• Identify the primary elements in living organisms
• Describe the structure of atoms
• Compare and contrast the different types of bonds
• Differentiate between atoms, molecules, and
compounds
• Explain how the structure of water affects its chemical
properties
• Explain how acids and bases affect pH
• Explain how monomers are used to form polymers
• Compare and contrast the structure and function of the
four classes of biological molecules
What’s the matter?
WHY?
Matter is everything
Table 2.2
Figure 2.3
Chemical Bonds Link Atoms
Figure 2.4
Chemical Bonds
1.
2.
3.
18
1. Ionic Bond
2. Covalent Bond
22
Figure 2.7
3. Hydrogen Bond
26
negative positive
Figure 2.9
Table 2.3

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Chemistry of life -intro

Editor's Notes

  1. FIGURE 2-4 There aren't many ingredients in you. Four of the 10 most common elements make up about 96% of your body.
  2. FIGURE 2-1 Familiar elements. Elements are substances that cannot be broken down chemically into any other substances.
  3. FIGURE 2-3 The vital statistics of atoms. A guide to reading the periodic table.
  4. FIGURE 2-2 The atom. At the center of an atom is a nucleus containing protons and (in all elements except hydrogen) neutrons. The nucleus is surrounded by electrons whirling about in a cloud.
  5. FIGURE 2-5 (part 1) Electrons and the shells they inhabit.
  6. FIGURE 2-5 (part 2) Electrons and the shells they inhabit.
  7. FIGURE 2-8 (part 1) Ionic bonds: transfer of electrons from one atom to another. The resulting charged atoms (ions) attract each other.
  8. FIGURE 2-8 (part 2) Ionic bonds: transfer of electrons from one atom to another. The resulting charged atoms (ions) attract each other.
  9. FIGURE 2-7 (part 1) Covalent bonds: strength through electron sharing. The molecular structures formed by covalent bonding can be represented on paper in several different ways.
  10. FIGURE 2-7 (part 2) Covalent bonds: strength through electron sharing. The molecular structures formed by covalent bonding can be represented on paper in several different ways.
  11. FIGURE 2-10 Three ways in which atoms and molecules are bound.