Name _____________________________________________________
Honors Living Environment
Date_____________ Period_____________
Organic Molecules Worksheet
Carbohydrates
1) All organic compounds contain __________________ & ____________________.
2) What atoms make up carbohydrates? __________________, ___________________, __________________.
3) What is the ratio of hydrogen to oxygen atoms present in all carbohydrates? ______: ______
4) What are the three types of carbohydrates?
a. ________________________________________
b. ________________________________________
c. ________________________________________
5) What is the difference between monosaccharides and disaccharides?
__________________________________
___________________________________________________________________________________________
___________________________________________________________________________________________
___________________________________________________________________________________________
6) What are the three examples of monosaccharides?
a. ________________________________________
b. ________________________________________
c. ________________________________________
7) What are four examples of polysaccharides?
a. ________________________________________
b. ________________________________________
c. ________________________________________
d. ________________________________________
Base your answers to questions 8-10 on the information below and on your knowledge or biology.
Below is an example of dehydration synthesis. In dehydration synthesis, a hydrogen atom from one molecule
joins with hydroxyl group (-OH) from another molecule to form water, leaving two molecules bonded to the
same oxygen atom. For example, when glucose and glucose combine by dehydration synthesis, they form
maltose and water.
Below is an example of hydrolysis. Complex organic molecules are broken down by addition of the
components of water – H+ and OH.
Name _____________________________________________________ Date_____________ Period_____________
Honors Living Environment
8) What are the products of the hydrolysis reaction? ______________________________________________
9) What are the reactants of the dehydration synthesis reaction? ____________________________________
10) How are the reactions in #8 and #9 related? ____________________________________________________
___________________________________________________________________________________________
___________________________________________________________________________________________
Base your answers to questions 12 &13 on the diagrams below and on your knowledge of biology.
11) Which reaction(s) is hydrolysis taking place? __________________________________________________
a. How do you know? __________________________________________________________________
_____________________________________________________________________________________
12) Which reaction(s) is dehydration synthesis taking place in? ______________________________________
a. How do you know? __________________________________________________________________
_____________________________________________________________________________________
13) What are polysaccharides? ___________________________________________________________________
___________________________________________________________________________________________
___________________________________________________________________________________________
14) What substance would be the repeating unit that makes up glycogen? _____________________________
15) Write each name or formula under the correct heading in the charts below. Use the following items:
Sucrose
Glucose
Starch
C6H12O6
Cellulose
Maltose
Fructose
C12H22O11
Lactose
Glycogen
Galactose
Disaccharide
Monosaccharide
a.
a.
b.
b.
c.
c.
d.
d.
Polysaccharide
a.
b.
c.