L4:Quick Review: Carbs
30
1. What are foods that contain lots of carbs?
¨  bread, sugar, pasta, rice
¨  2. Name a monosaccharide.
¨  fructose, glucose, galactose
¨  3. What is the primary use of carbohydrates by us
¨  energy
¨ 
L4 Carbs 2 Outline
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Go over NorKam Website
¨  Notes on
¨ 
¤ Polysaccharides
n Starch
n Cellulose
n Glycogen
L4:Sweeteners: Do Not Copy
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Sugar tastes sweet because it stimulates sweet
receptors in our taste buds.
¨  Simple sugars do this but complex carbs don’t.
¨  Sugar has 4 calories per gram
¨  Aspartame has 4 calories per gram (its a protein)
¨  Aspartame is 180X sweeter than sugar (sucrose)
¨  Therefore you only need 1/180 the amount to
sweeten pop.
¨ 
L4: Carbohydrates
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Polysaccharides (complex sugars)
¨ 
¤ are
long-chain molecules made up of
monosaccharides
L4: Carbohydrates
35
¨ 
Cellulose used by plants for structural support
**structure is unbranched** very difficult to digest
L4: Carbohydrates
36
¨ 
Starch: is a plant storage carbohydrate **structure
is branched**
L4: Carbohydrate
37
¨ 
Glycogen: is stored in the liver and muscle cells,
like starch, is a reserve carbohydrate which can
be drawn upon when energy needs are
demanded.
¤ **structure is highly branched**
L4 Assignment Carbs Chart
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¨ 
Make up a chart on the following carbs
monosaccharides, disaccharides, starch, glycogen,
and cellulose To be added to Summary
Carbohydrate
Drawing
example names
for mono and
disaccharides
Nutritional sources
Summary Assignment Molecules
Chp 2
1 
Condensation reaction pg 34
2 
Water molecule with diagrams pg 30
3 
Molecules Chart Slide 21
4 
Carbs Chart Slide 38