1. 1.3.3 Biomolecular Structures

2. Types of Food
The elements combine in different ratios to form different food components (biomolecular units)
Food is made up of six different components
Water Proteins
Lipids Carbohydrates
Vitamins Minerals

3. Humans are mainly made up of Water!

4. Carbon Hydrogen Oxygen
Carbohydrates
Carbohydrates contain the elements
Carbon Hydrogen Oxygen
The general formula for a carbohydrate is
Cx(H2O)y
There are twice as many hydrogen molecules as oxygen molecules

5. Learning check What are the six different food components?
Water Proteins
Lipids Carbohydrates
Vitamins Minerals

6. A common carbohydrate General formula = Cx(H2O)y When x = y = 6
We fet the formula C6H12O6
What is the name of this monosaccharide carbohydrate?
Glucose

7. Another common carbohydrate
General formula = Cx(H2O)y
When x = 12 and y = 11
We get the formula C12H22O11
What is the name of this disaccharide carbohydrate?
Sucrose

8. Carbon Hydrogen Oxygen
Learning check
Name the three elements that make up carbohydrates
Carbon Hydrogen Oxygen
What is the general formula for a carbohydrate?
Cx(H2O)y

9. Need to know Define Biomolecular Structures
State that simple biomolecular units are composed of a combination of elements in different ratios e.g. carbohydrates Cx(H2O)y

10. END