Exercise 5 Content

• Learning Objectives
• Lab Readings
• Videos
• Lab Activity
• Quiz

Learning Objectives

After completing this lab, the students will be able to:

• Describe the four major types of biomolecules and their functions. 
• Describe the basic subunits that comprise these molecules. 
• Describe the tests used to identify these molecules. 
• Distinguish between positive and negative control tests. 

Lab Readings

Read the following materials before you begin the experiment.

1. Chapter 3: Biological Macromolecules (source: Openstax) 
   • Introduction 
   • 3.1 Synthesis of Biological Macromolecules 
   • 3.2 Carbohydrates 
   • 3.3 Lipids 
   • 3.4 Proteins 
   • 3.5 Nucleic Acids 
   • Key Terms 
   • Chapter Summary 
   • Visual Connection Questions 
   • Review Questions 
   • Critical Thinking Questions 

2. Module 3: Biological Macromolecules (Source: Lumen learning)
3. Study Guide: Chemistry of Life Study Questions (Lumen Learning)
4. Biological Molecules (Lumen learning)
5. Ch 03_ Biological Macromolecules (OneDrive)

Videos

Watch the following videos on the scientific method before you start the lab activity.

1. Watch below or on YouTube the video The molecules of Life
   https://youtu.be/QWf2jcznLsY

2. Watch below or on YouTube the video Biological Molecules
   https://www.youtube.com/watch?v=PYH63o10iTE

Lab Activities

Watch these two lab simulation videos to detect the presence of each type of biological molecule.

1. Lab Simulation – Biological Macromolecules video
   https://wilmu.mediaspace.kaltura.com/media/Sci+251+-+Lab+Simulation+-+Biological+Macromolecules/0_ibkdoqzy

2. Watch the video below or on YouTube Makin’ up labs with Stu Dent Ep 1 Biomolecules

3. Test Results
   • Benedict’s Test for reducing sugar
     • https://microbiologyinfo.com/benedicts-test-principle-composition-preparation-procedure-and-result-interpretation/
   • Iodine test for starch (slide no.5)
     • https://pt.slideshare.net/ellenmcampbell/biochemical-tests/3
   • Sudan III Test for lipid (please click free full text to view the lipid test result)
     • https://europepmc.org/article/pmc/pmc3577220
   • Biuret Test for Protein
     • https://microbenotes.com/biuret-test-for-protein/

Quiz

Test (link to OneDrive)
This test is from quizlet.com, and can be obtained there.