Transcript Group A Poster

PRE/POST ASSESSMENT
• What is the overall function of a
carbohydrate?
• Name the 3 different types of carbohydrates
and give a food example for each.
• What indicator is used to test for the presence
of glucose? Describe the test.
• What indicator is used to test for the presence
of starch? Describe the test.
Why do you
eat food?
Engage Activity
Can you rank the carbohydrate food items
from the food containing the least complex
carbohydrate to the food containing the most
complex carbohydrate?
1. Each group of students will receive a sack
with 3 different carbohydrates (one
monosaccharide, one disaccharide, and one
polysaccharide.
2. When instructed, open the sack and organize
the food items from the least complex to the
most complex.
Living things take in macromolecules
for life.
Sun
Food Sources
Come from
Animal
Proteins
Elements C-H-O-N
Growth and Repair
Ex. Chains of amino acids
Plants
Lipids
Carbohydrates
Elements C-H-O
Elements C-H-O
Stored Energy
Ex. Cell Membrane, Fats,
Waxes, Oils
Quick Energy
Ex. Monosaccharide
Disaccharides
Polysaccharides
Monomer- single sugar
Polymer- two or more simple sugars bond together
CARBOHYDRATES
INFORMATION GUIDELINE
Three Types of Carbohydrates →
Common names of carbohydrates
→
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Chemical Formula →
Monosaccharides
(monomer)
Disaccharides
(polymer)
Polysaccharides
(polymer)
Simple sugar
Double sugars
Many sugars
Composed of only one monosaccharide
composed of two Monosaccharides
Chains of many glucose molecules
Three main types of monosaccharides

Three main types of disaccharides 
Three main types of polysaccharides 
Glucose
Most common monosaccharide
Found in all disaccharides and
polysaccharides
Common in grapes, honey, and high energy
sports drinks
Fructose
Fruit sugar – found in fruits such as,
oranges, peaches, plums, grapefruit, and
fruit juices
Galactose
Never found alone in nature.
C6H12O6
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Sucrose = Glucose + Fructose
Common name is table sugar or
cane sugar
Found in table sugar, candy, cakes,
syrup
Maltose = Glucose + Glucose
Malt sugar
Found in milkshakes and malted
milk
Lactose =Glucose + Galactose
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Milk sugar (found in milk and milk
products)
C12H22O11
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Cellulose
Provides structure for plants – makes up cell
walls
Not digestible in humans
Found in wood, paper, chewing gum
Starch
Storage form of glucose in plants
Found in pasta, potatoes, cereal, corn,
rice, cakes, cookies, and breads
Glycogen
Storage form of glucose in animals
Found in muscles and liver
(C6H12O6)n
CARBOHYDRATES – Group A
Food Examples – Paste as many pictures Explore activity –
of carbohydrates in this space
In the presence of glucose and heat,
Benedict solution will change from
_________ to _________ in color.
When iodine is added to starch, iodine
will change from ________ to
__________ in color.
Hypothesis: If I test my unknown
solution with ________________, then I
can find out if my unknown is composed
of ______________________________.
1. In nature, carbohydrates are:
Number
Glucose
Starch
A. Plants only
of
present
present
B. Animals only
Unknown
+ or + or C. Both plants and animals
Important carbohydrate facts:
2. Function is: _________________
3. Common elements are
_______, ________, & _________.
Conclusion: My unknown substance is
_________________ because
__________________________________
CARBOHYDRATES – Group B
Food Examples – Show 2 pictures of:
Monosaccharides
Disaccharides
Polysaccharides
1. In nature, carbohydrates are :
A. Plants only
B. Animals only
C. Both plants and animals
Important carbohydrate facts:
2. Function is _____________
Explore activity –
In the presence of glucose and heat,
Benedict solution will change from
_________ to _________ in color.
When iodine is added to starch, iodine
will change from ________ to __________
in color.
Hypothesis: If I test my unknown
solution with _____________________,
then I can find out if my unknown is
composed of
___________________________.
Number
Glucose
of
present
Unknown
+ or -
Starch
present
+ or -
3. Common elements are ___, ____, ____
4. What is the formula for glucose?
5. What is the formula for sucrose?
Conclusion: My unknown substance is
_________________ because
__________________________________
Unknown Carbohydrate Outcome
Unknown Number
( # on test tube)
1
2
3
4
5
6
7
8
Glucose Test
Results
+ or -
Starch Test Results
+ or -
Unknown Name
(provided by
teacher)
Anchor Activity
• Students will go to www.mypyramid.gov and
research food choices, normal caloric intake
for their age group and activity level, and will
use this site to answer the questions in their
anchor activity packet.
• The teacher can also download information
about fruits, vegetables, grains, etc. to place in
the anchor activity packet for students to use
if they do not have access to a computer.