Westveer – Biology
Name:______________
(Save as your name on the desktop)
Organic Molecules Computer Lab
Do not listen to music, play games, e-mail, or be off task on the internet, -10 points for
each infraction.
Organic Molecules Lab
http://www.occc.edu/trandall/biologylabs/Documents/Organic%20Compounds/Organic%20Compound
s.htm
Cells contain many organic molecules. These molecules are essential to life. Many of them are acquired
from the food we eat. In this lab you will study carbohydrates, proteins and fats
You will learn how to test for each of these organic molecules by clicking on the boxes below. Complete
each of the tests for carbohydrates, proteins and fats. When you have finished click on the foods button
to test for the presence of which organic compounds are found in various common foods
Carbohydrates:
Draw the Monosaccharides here;
Name the test (reagent) for Single Sugars: _______________
Name the test
for Single Sugars:
- Negative Test
+ Positive Test
Color of solution
Starches:
Starches are tested with Iodine, an element which is yellow as a negative, in water, and turns purpleblack in the presence of starches:
Name the test (reagent) for Starch (Complex Carbohydrates: _______________
Name the test
for Single Sugars:
Color of solution
- Negative Test
Yellow
+ Positive Test
Purple - Black
Proteins:
Draw the Amino Acid Chain Here;
Name the test (reagent) for Protein: _______________
Name the test
for Protein:
- Negative Test
+ Positive Test
Color of solution
Fats:
Draw the triglyceride chain Here;
Name the test (reagent) for Lipids: _______________
Name the test
for Lipids:
Color of solution
- Negative Test
+ Positive Test
Also a brown paper will keep a lipid stain, this is the test used on the EOC. (Think about a fast food bag
and grease spots)
Foods
Now that you know the tests for organic molecules: test the food and
determine which of the organic compounds each posses.
Use + for positive test, - for negative test, some foods will contain
more than one organic molecule.
Food
Potato
Orange
Juice
Almonds
Eggs
Canned
Salmon
Milk
Simple
Sugar
Starch
Protein
Fats
Use the internet to fill in the chart below: Use useful links from Mr. Westveers
site to help.
Organic
Compound
Elements in it
(use Symbols)
Subunit
(Monomer)
List 2
Examples
Carbohydrates
1.
Lipids
2.
1.
Proteins
2.
1.
Nucleic Acids
2.
1.
2.
Main Function
in Body