Week 4.2: Organic Macromolecules Lab

Please sign in for attendance.

Organic Macromolecules Lab

Welcome to Week 4!

• Watch Lecture 4 and complete the discussion post

• Week 4 Content Quiz is now open

• Exam 1 information has been posted!

• Lecture assignments are due on Sunday, 9/15 at 11:59pm

Lecture Reminders

• Post-lab quiz is due on Sunday, 9/15 at 11:59pm

Lab Reminders

Objectives

• Identify the 4 types of macromolecules and their monomers
• Identify the structure and functional groups of each of the macromolecules

• Describe how living things use each of the macromolecules
• Explain how the shape of a molecule affects its function
• Describe how macromolecules are formed and broken apart and into what kind of monomers

Required PPE

• Closed-toe shoes
• Goggles
• Gloves

Week 4: Organic Macromolecules Lab

1. Biuret TestMacromolecule?

Week 4: Organic Macromolecules Lab

1. Biuret TestMacromolecule?

• Detects proteins
• Detects the peptide bond

Color change?

Week 4: Organic Macromolecules Lab

Week 4: Organic Macromolecules Lab

1. Biuret TestMacromolecule?

• Detects proteins
• Detects the peptide bond

Color change?

• Negative - blue
• Positive - purple

Week 4: Organic Macromolecules Lab

2. Iodine TestMacromolecule?

Week 4: Organic Macromolecules Lab

2. Iodine TestMacromolecule?

• Detects unbranched polysaccharides

Color change?

Week 4: Organic Macromolecules Lab

2. Iodine TestMacromolecule?

• Detects unbranched polysaccharides

Color change?

• Negative - yellow
• Positive - black

Week 4: Organic Macromolecules Lab

3. Benedict's Test (No HCl)Macromolecule?

Week 4: Organic Macromolecules Lab

3. Benedict's Test (No HCl)Macromolecule?

• Detects monosaccharides
• Detects the carbonyl group in the sugar

Color change?

Week 4: Organic Macromolecules Lab

3. Benedict's Test (No HCl)Macromolecule?

• Detects monosaccharides
• Detects the carbonyl group in the sugar

Color change?

• Negative - blue
• Positive - red

Week 4: Organic Macromolecules Lab

4. Benedict's Test (With HCl)Macromolecule?

Week 4: Organic Macromolecules Lab

4. Benedict's Test (With HCl)Macromolecule?

• Detects disaccharides
• HCl breaks the bond between the two sugars
• Detects the carbonyl group in each sugar

Color change?

Week 4: Organic Macromolecules Lab

4. Benedict's Test (With HCl)Macromolecule?

• Detects disaccharides
• HCl breaks the bond between the two sugars
• Detects the carbonyl group in each sugar

Color change?

• Negative - blue
• Positive - red

• For the rest of class, finish up the lab (Parts 2 and 3).

Week 4: Organic Macromolecules Lab