Pre Gizmo Helpful Chart of Science 
Do you know what is in your food? Most foodstuff is composed of 3 types of molecules: Carbohydrates,
proteins and lipids. BUT WHAT DOES THAT MEAN??? READ through your “Identifying Nutrients”
Gizmo and fill in the chart below BEFORE you embark on the Gizmo:
Types of
Carbohydrates:
Food Examples?
What’s the test &
how will you know
if it is positive?
The body uses
or needs Carbs
for what?
Monosacharides/
Simple Sugars
Disaccharides
Starches/Polysaccharides/
Complex Sugar
Food Examples?
What’s the test &
how will you know if
it is positive?
The body uses or
needs Proteins for
what?
Food Examples?
What’s the test &
how will you know if
it is positive?
The body uses or
needs Lipids for
what?
Proteins:
Lipids/Fats:
Activity B (Continued) Gizmo Application…
4. Practice! CHOOSE ANY 5 food samples (B-S) and determine the nutritional content. Indicate
the test results by placing either a “+” or “-“ in each column.
Carbohydrate Tests
Food
Sample
(B-S)
Benedict
Test
Lugol
Test
Protein
Test
Biuret
Test
Lipids Test
Sudan Red
Test
Test Results – Are these nutrients
present?
MonoStarch Proteins Lipids
saccharides
5. For each sample that you tested above, identify a type of food that corresponds to your test
results.
Food
Sample
(B-S)
Nutrient(s)
Present?
Type of Food? (Examples)
6. What was a “big idea” that you learned from doing this Identifying Nutrient Gizmo?