Biology – Faught
Name:
Hour:
Macromolecules Worksheet
Review questions:
Identify the following pre-fixes:
a. Monob. Dic. PolyWhat are the six (6) major elements necessary for life?
What are three (3) reasons that Carbon is so important for life?
The following questions apply to the chemical formula of water (H 2O).
1. What elements from the periodic table make up water?
2. What does the subscript number two (2) following the H in H 2O tell you?
3. Why does oxygen not have a subscript number following it?
4. How many molecules of water are represented by the formula H 2O?
5. Draw the chemical structure (using element symbols and lines) of water:
6. What do the lines between O and H in the structural formula represent?
Carbohydrates
7. What three elements from the periodic table are all carbohydrates composed of?
8. Carbohydrates are all composed of saccharides. Define what a saccharide is.
9. List three common examples of carbohydrates:
There are many different kinds of monosaccharides that exist in many different forms of foods. Some of the most common and
abundant monosaccharides include: glucose, fructose, and galactose.
10. Using your textbook, mobile devices, and/or computer, complete the information table of the following monosaccharides:
Glucose
Fructose
Galactose
Draw the chemical
structure
How many carbon
atoms are there?
How many
hydrogen atoms are
there?
How many oxygen
atoms are there?
Write the chemical
formula
Ex. C _ H_ O_
What is the ratio of
Carbon to Hydrogen
to Oxygen?
11. Using the information table above, what are some similarities between the three monosaccharides? What are some differences?
Carbohydrates can be quickly identified in an ingredient list because of the –ose ending that the ingredient has. There are many,
many different carbohydrates that exist in foods today, much more than the three we’ve examined today.
12. Using your textbook, mobile devices, computer, and/or food items at home, pick three (3) food items and complete the
information table below:
Food item name
Carbohydrate from
ingredient list
Grams (g) of carbohydrate
per serving
Grams (g) of carbohydrate
in total