The Building Blocks of Life

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Presentation transcript:

The Building Blocks of Life Section 6.4

I. Organic Chemistry Carbon is a component of almost all biological molecules Has 4 electrons in outermost energy level Can form 4 covalent bonds Shape: straight chains, branched chains and rings

II. Macromolecules Macromolecules Macro= large Large molecules formed by joining smaller organic molecules together Polymers Poly= many Meros= part Molecules made from repeating units of identical or nearly identical compounds Linked together by a series of covalent bonds

III. Types of macromolecules Carbohydrates Store energy Provide structural support Examples: glucose (mono) and sucrose (di)

III. Types of macromolecules Proteins Transport substances Speed reactions Provide structural support Make hormones Example: Keratin and collagen

III. Types of macromolecules C. Lipids Fats Store energy Provide barriers Examples: oils, waxes, phospholipids

III. Types of macromolecules Nucleic acids Store and communicate genetic information Example: DNA (deoxyribonucleic acid)

1. Which element do almost all biological molecules contain? 2. What type of biological molecule is an enzyme? 3. What are fats, oils, and waxes composed of? 4 What biological molecule transports substances between cells? .

3. What are fats, oils, and waxes composed of?

4 What biological molecule transports substances between cells? .

Answers: Carbon Protein Lipids proteins

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