UNIT
7
ACTIVITY
Macromolecule Web Quest
Purpose. Now that we know the purpose of macromolecules, we need to answer the question
of where they come from. Plants are able to make macromolecules on their own. However,
we learned that humans are unable to produce macromolecules on their own. In order to
obtain macromolecules, or the parts to build them, humans must eat. Therefore, we can
conclude that macromolecules are found in foods. This web quest is in place of a lab in which
we would explore our food and what macromolecules it contains.
Part One: Introduction
In part one, you will learn how to identify the different macromolecules through a variety of
tests.
1. Login and open your web browser.
2. Type in the following address: http://bit.ly/7bmacrolab
3. Read the instructions in red and blue.
a. What macromolecules will you be testing in this online lab?
_________________________________________________________
4. Click on carbohydrates.
a. Look at the diagrams. According to the diagrams, what elements are found in
carbohydrates? ___________________________________________
5. Read the information in red.
a. How will the Benedict solution tell you there is sugar present?
___________________________________________________
b. What type of sugar does Benedict solution test for?
___________________________________________________
6. Click on the link “click here to fill a test tube with 2mL of water.” When the next page
loads, click on “click here to add 2mL of Benedict’s reagent to the water.”
7. Benedict’s reagent must be heated in order for the test to work. Click on the picture of the
beaker on the hot plate.
a. What color is the water in the test tube? ________________________
8. Click on the link that says “click here” next to the picture of the glucose solution. When
you do this, you are adding simple sugars (monosaccharides) to the test tube.
a. What is the color of the solution in the test tube? ____________________
9. Click on “click here to continue.” Read the information in red.
a. The negative result (no sugar present) has a _____________ color.
b. The positive result (sugar present) has a ________________ color.
Name!Date!Per
Unit 7 | Activity | Macromolecule Web Quest"Page 1
