Purpose:
Food Testing Lab Simulation
To determine a positive test for indicators of macromolecules
To use indicators to test for presence of macromolecules in foods
Background:
Macromolecule
Simple Sugars
Food Examples
Purpose or uses in Body
Starches
Lipids
Proteins
Click on link below for food testing simulation:
http://www.okc.cc.ok.us/biologylabs/Documents/Organic%20Compounds/Organic%20Compoun
ds.htm
Simple Sugar Test:
Solutions to Test
Indicator Used
Control (H2O)
Glucose Solution
Starch Test:
Solutions to Test
Control (H2O)
Cornstarch Solution
Protein Test:
Solutions to Test
Control (H2O)
Protein Solution
Lipid Test:
Solutions to Test
Control (H2O)
Vegetable Oil
Color Change
+ or – for sugar?
Color Change
+ or – for starch?
Indicator Used
Color Change
+ or – for protein?
Indicator Used
Color Change
Indicator Used
+ or – for lipids?
Part B: Testing food samples for macromolecules.
Food
Prediction of
Simple
+/Starch
+/Protein
+/Lipid
Sample Macromolecules Sugar
Result
present
Result Sugars Result Starch Result Protein
Potato
+/Lipids
Orange
Juice
Almonds
Eggs
Salmon
Milk
1. If you are trying to build MUSCLE, which of the food sources tested would be your best choice? Explain.
2. Besides simple sugsrs, what is the other type of carbohydrate?
3. Why are starches (carbo-loading) good for runners before a long race?
4. Which of the food samples tested positive for the MOST different types of molecules? Explain why it is an
advantage for us to eat foods that contain more than one type of molecule.
5. Label the pictures below as the type of macromolecule that they represent: