1. Agenda 4/17 and 4/18 Fat Video Molecular Biology Review Notes
Organic Molecules Drawings
Properties of Water POGIL
Homework: Biomolecules video and notes
Turn in: both video notes

2. What is fat?

3. Molecular Biology
Molecular biology explains living processes in terms of the chemicals involved
The most significant molecule is carbon
Carbon can for 4 covalent bonds
That means it can create a lot of different types of molecules
Life is based on: carbohydrates, lipids, proteins, and nucleic acids

4. Metabolism
Metabolism- web all of enzyme- catalyzed reactions in a cell or organism
Anabolism- synthesis of complex molecules from simpler molecules
Catabolism- breakdown of complex molecules into simpler molecules

5. Carbohydrates Monomers=monosaccharides
Monosaccharides are linked together by condensation reactions
Can form disaccharides and polysaccharides
Examples: cellulose, starch, glycogen, sucrose, lactose, maltose

6. Lipids Made of fatty acids and glycerol
Can be saturated, monounsaturated, or polyunsaturated
Unsaturated fats can be cis or trans isomers
Triglycerides form by condensation reaction of three fatty acids and one glycerol

7. Proteins
Amino acids held together by peptide bonds in a condensation reaction
20 different amino acids
Can be linked in any sequence which creates a wide range of possible proteins
Enzymes are an example of proteins
Proteins can be denatured at extremely high temperatures, extreme pH

8. Nucleic Acids DNA and RNA are polymers of nucleotides
DNA is double stranded with thymine
RNA is single stranded with uracil
Hydrogen bonds hold complementary bases together in DNA molecules
Antiparallel structure!

9. Water Water molecules are polar and hydrogen bonds form between them
Cohesion and adhesion are important
High specific heat of water also due to hydrogen bonding
Substances can be hydrophobic or hydrophilic
Ex: thermal regulation and sweat