1. Aim: How can we describe the structure of carbohydrates ?
Do Now
Complete Worksheet
HW due tomorrow
Quiz on Friday

3. Monosaccharides Simple sugars with 3 to 7 carbon atoms
Glucose, fructose, galactose

4. Monosaccharide Milk Sugar Fruit Sugar
Use image to discuss the structure of the two simple sugars and their molecular formula C6H12O6. Use the InterWrite tablet to circle the functional group.

5. Carbohydrates
FIGURE 2–11 The Formation and Breakdown of Complex Sugars.

6. Copyright © 2009 Pearson Education, Inc
Copyright © 2009 Pearson Education, Inc., publishing as Pearson Benjamin Cummings
Carbohydrates
FIGURE 2–11 The Formation and Breakdown of Complex Sugars.

7. Carbohydrates
FIGURE 2–11 The Formation and Breakdown of Complex Sugars.
Copyright © 2009 Pearson Education, Inc., publishing as Pearson Benjamin Cummings

8. Carbohydrates
FIGURE 2–11 The Formation and Breakdown of Complex Sugars.

9. Building sugars Dehydration synthesis glycosidic linkage | glucose
monosaccharides
disaccharide
maltose
maltose
- Bond between 2 monosaccharide's

10. Building sugars Dehydration Synthesis monosaccharides | fructose
glucose
sucrose
(table sugar)
disaccharide
sucrose = table sugar

11. Disaccharides Two simple sugars condensed by dehydration synthesis
sucrose = glucose & fructose
maltose = glucose & glucose
lactose = glucose & galactose (lactose intolerance)

12. Disaccharide
Differentiate between the simple sugars and the complex sugar. Again, emphasize the structure and molecular formula C12H22O11. Use the InterWrite tablets to circle the functional group.
Maltose is two glucose molecules; forms in digestive tract of humans during starch digestion.  

13. Polysaccharides
Many monosaccharides condensed by dehydration synthesis
Cellulose (a structural component of plants)
Starch (main energy reserve in plants)
Glycogen (energy reserve in animals)

14. Starch is straight chain of glucose molecules with few side branches.
Polysaccharide
Identify the structure of the polysaccharide. Highlight for students how the long chains of monomers form this polymer. Also, use the InterWrite tablets to circle the functional group.
Starch is straight chain of glucose molecules with few side branches.
Types of Carbs

15. Starch vs. Cellulose

16. Share and Pair Summary Activity

18. Summary Distinguish inorganic and organic compounds.
Why are carbohydrates important?
Explain why glucose is a simple monosaccharide.
Why does synthesis and hydrolysis pertain to carbohydrates?