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Building Biomolecules 
Learning Goal: 
I will build models of monomers of carbohydrates, lipids, and proteins. I will model dehydration 
synthesis and hydrolysis. I will write a definition of dehydration synthesis and hydrolysis. 
Key 
Carbon: Black 
Hydrogen: white 
Oxygen: Red 
Nitrogen: Blue 
short white tubes are for single bonds 
long white tubes are for double bonds 
Carbohydrates 
The monomer of a carbohydrate is called a monosaccharide. There are several types of 
monosaccharides: glucose, fructose, sucrose, maltose, and lactose. 
Where are these found? 
glucose→ potatoes 
fructose→ fruit 
maltose→ sweet potatoes and turnips 
lactose→milk 
1. Today you will build a molecule of glucose. Use the key above and the drawing 
below to construct your model. 
2. Draw your glucose model in your journal.
3. Take a Picture and place it in your folder 
4. Now make a second model. 
Disaccharide 
You will now construct a disaccharide. 
You are going to model the process that occurs in the body when glucose forms glycogen to be 
stored in the liver for later use. Glycogen is a larger molecule than a disaccharide, but it will help 
you understand the process. 
1. Place both of your molecules on the table as below 
2. Take a picture and place it in your folder 
3. Remove the Hydrogen and stick from the OH on the left 
4. Remove the OH on the right but leave the stick attached to the C 
4. Combine the two monosaccharide at the remaining oxygen and carbon. 
You have now formed a disaccharide! 
5. Take the left-over H and OH and combine them. 
6. What does this make? 
7. This process is called dehydration synthesis. 
8. WRITE your own definition of dehydration synthesis in your journal 
Hydrolysis… 
Now we will model the process that occurs when the body needs a quick supply of glucose.
For Example: The liver converts the glycogen into glucose for quick delivery into the blood- stream. 
1. Reverse the process...add the H20 molecule back to the disaccharide to make two separate 
glucose molecules. 
This is hydrolysis! 
2. Write your own definition of hydrolysis in your CJ.

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Building molecules

  • 1. Building Biomolecules Learning Goal: I will build models of monomers of carbohydrates, lipids, and proteins. I will model dehydration synthesis and hydrolysis. I will write a definition of dehydration synthesis and hydrolysis. Key Carbon: Black Hydrogen: white Oxygen: Red Nitrogen: Blue short white tubes are for single bonds long white tubes are for double bonds Carbohydrates The monomer of a carbohydrate is called a monosaccharide. There are several types of monosaccharides: glucose, fructose, sucrose, maltose, and lactose. Where are these found? glucose→ potatoes fructose→ fruit maltose→ sweet potatoes and turnips lactose→milk 1. Today you will build a molecule of glucose. Use the key above and the drawing below to construct your model. 2. Draw your glucose model in your journal.
  • 2. 3. Take a Picture and place it in your folder 4. Now make a second model. Disaccharide You will now construct a disaccharide. You are going to model the process that occurs in the body when glucose forms glycogen to be stored in the liver for later use. Glycogen is a larger molecule than a disaccharide, but it will help you understand the process. 1. Place both of your molecules on the table as below 2. Take a picture and place it in your folder 3. Remove the Hydrogen and stick from the OH on the left 4. Remove the OH on the right but leave the stick attached to the C 4. Combine the two monosaccharide at the remaining oxygen and carbon. You have now formed a disaccharide! 5. Take the left-over H and OH and combine them. 6. What does this make? 7. This process is called dehydration synthesis. 8. WRITE your own definition of dehydration synthesis in your journal Hydrolysis… Now we will model the process that occurs when the body needs a quick supply of glucose.
  • 3. For Example: The liver converts the glycogen into glucose for quick delivery into the blood- stream. 1. Reverse the process...add the H20 molecule back to the disaccharide to make two separate glucose molecules. This is hydrolysis! 2. Write your own definition of hydrolysis in your CJ.