Unit 3- Molecules of Life I. 4 Main Organic Compounds in living things A.Carbohydrates B.Lipids C.Proteins D.Nucleic Acids.

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Presentation transcript:

Unit 3- Molecules of Life I. 4 Main Organic Compounds in living things A.Carbohydrates B.Lipids C.Proteins D.Nucleic Acids

II. Basic Chemisty A. Matter  - made of atoms  More than one type of atom bonded to others = compound

B. Bonds 1. hold atoms to other atoms 2. ionic: held by opposite charges 3. covalent: held by shared pairs of electrons

C. Bonding 1. determined by valence electrons 2. every spot with a single electron is where a covalent bond forms 3. dot diagrams include symbol & dots for valence e-

D. Drawing molecules= structural formula 1. atoms represented by symbols and bond by lines 2. do not show unshared pairs of e- 3. double bonds = 2 lines 4. triple bonds = 3 lines

III. Organic Compounds A. Contain C-H bonds, usually C-C bonds too. B. Other most common elements= ________ C. Why Carbon?

D. Common structures of C Compounds 1. chains 2. branched chains 3. rings

IV. Carbohydrates A. Elements B. elements combine to form units of _______.

C. Subtypes 1. monosaccharides/ Examples: 2. disaccharides/ Examples:

3. polysaccharides/ Examples:

xdeeeeeeeeee D.. Connecting Sugars = When/why? E. Disconnecting Sugars= 1. 2.When/why?

V. Lipids A. Elements B. Elements combine to make units of ______ & ________; sometimes________.

C. Subtypes 1. Waxes 2. Phospholipids

3. Triglycerides

Steroids

D. Connecting Glycerol to Fatty Acid Chains: 1. 2.When/why: E. Disconnecting Glycerol from FA chains: 1. 2.When/why:

VI. Proteins A. Elements B. Elements combine to make units (monomers) called _______/______

C. Amino Acids

D. Types:

E. Functions

F. Connecting Amino Acids: G. Disconnecting Amino Acids: