Transcript 1.3.3 Biomolecular Structures Types of Food The elements combine in different ratios to form different food components (biomolecular units) Food is made up.

1.3.3 Biomolecular Structures
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
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Humans are mainly made up of
Water!
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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
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Learning check
What are the six different food components?
Water
Proteins
Lipids
Carbohydrates
Vitamins
Minerals
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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
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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
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Learning check
Name the three elements that make up carbohydrates
Carbon
Hydrogen
Oxygen
What is the general formula for a carbohydrate?
Cx(H2O)y
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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
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END
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