1. Do Now
What elements do you think are important for us to consume? Why?

2. Objectives
Identify the macromolecules needed to sustain life, and explain the importance of each one.
Investigate and identify the type of macromolecules in various food items using indicators

3. Elements?
Element: A pure substance that cant be broken down into simpler substances by any physical or chemical means. 1 Atom.
Atom: Smallest particle of matter that still has chemical properties.
Out of all the elements listed, which 3 do you feel are the most important? Why?

4. I Need My Macromolecules!
Macromolecules: Large molecules (polymers) formed from smaller ones (monomers)
3 main elements found in ALL macromolecules
Carbon
Hydrogen
Oxygen
What type of macromolecules are important to you?

5. Macromolecules Protein Carbs Lipids Nucleic Acids
Structures (hair, muscle, etc), Enzymes, Transport, etc.
Monomer: Amino Acids
Carbs
Provides Energy
Monomer: Monosaccharides
Lipids
Energy storage, insulation, cell membrane structure
Monomer: Glycerol and Fatty acids
Nucleic Acids
Stores and transmit genetic information
Monomer: Nucleotides

6. Carbohydrates Have a 1:2:1 Ratio
Simple Carbs: Sugars made of 1-2 molecules.
Quickest energy (rapidly digested)
Monosaccharides: 1 Sugar
Glucose and Fructose
Disaccharides: 2 sugars
Lactose and Sucrose
Complex Carbs: Sugar molecules strung together
Broken down more slowly
Polysaccharide: 3 or more sugars
Glycogen and Starch
Glucose
Sucrose
Glycogen

7. Testing for Organic Substances
Indicators: Helps identify a particular macromolecule
Biuret
Tests for Proteins
Changes from blue to violet
Benedicts
Test for monosaccharides
Changes from blue to green, yellow, orange, or red
Iodine
Test for polysaccharides
Changes from a rust to deep blue-blackish

8. Do Now-Pd. 4 Place phones into show organizer.
Then take out your labs, and begin reading part C to understand what to do before we begin.
Recall: Which indicator needed heat to react?

9. Do Now- Pd. 7
What is the difference between a negative control vs. positive control?
What three indicators will you be using in lab, what do they test for, and how will you know if that substance they test for is present in the solution?