Be sure Term 1 Portfolio includes:

1. SELF-REPORT CARD2. Checkpoint #1 & #23. Cells Quest4. Unit Test: Cells, Cell Membrane, Transport5. Labs (I have these!)6. Membrane Model Criteria Sheet7. Just Write Activity Endocytosis8. EVIDENCE of YOUR learning

-any other assignments or study materials you designed that show your practice & understanding

Your Portfolio shows your hard work!

1. Carbohydrates 2. Lipids 3. Proteins 4. Nucleic Acids

4 Major Classes of Organic Molecules

GeneralFunction: Quick, short term energy storage

Molecules Involved:

Carbon, Hydrogen and Oxygen

Ratio of Molecules:ratio of C:H:O is 1:2:1

General Molecular Formula:generic equation for carbs CnH2nOn

I. Carbohydrates

Why do carbohydrates matter?

Why do carbohydrates matter?

Why do carbohydrates matter?

Why do carbohydrates matter?

BREAKING NEWS:G20 Leaders to Discuss SUGAR

TAX!

1. Carbohydrate LabPart 1: Testing for starch Part 2: Testing for glucose

2. Questions 1-4 and Conclusion due next class

3. Check the Criteria Sheet so you can ace it!!!

4. ALSO: See remainder of this powerpoint for checking last day’s homework

TODAY’s Class: *ensure your portfolio is up to date!

Simple Carbohydrates: Examples & Diagrams

-any 3 to 7 carbon in a molecule is a simple sugar called a monosaccharide.

Ex: Any Pentose (5-carbon sugar) Deoxyribose found in DNARibose in RNA

Ex: Any Hexose (6 carbon sugar)Glucose in blood, cell’s main energy sourceFructose in fruits, sweetest of monomers

Glucose Found in:BloodUsed for:Cell’s main energy SourceDiagram:

Fructose Found in:FruitsUsed for:Quick energyDiagram:

MaltoseFound in:Not often in natural food sources, made when amylase breaks down starch ex) carmelized glucose

Used for:EnergyDiagram:

Disaccharides-contains two monosaccharidesEx: maltose, sucroseEx: glucose + fructose = sucrose (table

sugar)

Examples of PolymersStarch –Found in: in plants Use for: storage form of glucoseDiagram:

Glycogen-Found in: animalsUsed for: storage forms of

glucoseDiagram:

Cellulose-Found in: the cell walls of plantsUsed for: provides structure & support

Chitin -found in the cellWalls of fungus and theExoskeleton of arthropods

Comparing Structural Diagrams of Polysaccharides:

1a) each point on the diagram except the O is a carbon -5 carbons circled in totalb) This is a Pentose sugar made of 5 carbonsc) 3 examples of hexose sugars:

-glucose-fructose

-galactosed) Remember the general Molecular formula for a carb is CnH2nOn soo…. glucose: C6H1206 pentose: C5H1oO5e) A monosaccharide is made up of one sugar molecule, and has 3-7 carbons in it. A disaccharide is made up of two sugar molecules joined together and has more than 7 carbons.

Carbohydrate Qs KEY

2a)

2b)

Both:Involve waterInvolve carbohydratesInvolve chemical bonds (either formed or

broken)Are reactions involved in cellular metabolism

2c) What do both types of reactions have in common?