Objective: Learn the structure and functions of carbohydrates New words: iodine, indicator, starch, glucose, ribose, cellulose DO NOW: A student, Edwin, has tested different kinds of food to know which food contains starch. He found the following results: •Starch is present in: corn, rice, apple, banana, potato and pear. •Starch is absent in: chicken meat, ham, egg, cheese, and milk. What conclusion would you make from the food testing? Would pumpkin contain starch? How do you know?
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Objective: Learn the structure and functions of carbohydrates New words: iodine, indicator, starch, glucose, ribose, cellulose DO NOW: A student, Edwin,
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Objective: Learn the structure and functions of carbohydratesNew words: iodine, indicator, starch, glucose, ribose, cellulose
DO NOW:A student, Edwin, has tested different kinds of food to know which food contains starch.
He found the following results:
•Starch is present in: corn, rice, apple, banana, potato and pear.
•Starch is absent in: chicken meat, ham, egg, cheese, and milk.
What conclusion would you make from the food testing?
Would pumpkin contain starch? How do you know?
• What do all these molecules have in common?• What kind of compounds are shown in the pictures?
Objective: Learn the structure and functions of carbohydratesNew words: carbohydrate, glucose, ribose, ratio, glycogen, starch, cellulose, monosaccharide, polysaccharide
Do Now: List 4 things all the molecules below have in common
•What is the # of atoms of the following elements: carbon, hydrogen, and oxygen?•What is the C:H:O ratio?•What do this molecules are made of?•How do you say that in Greek?•What is another word to say “Carbohydrate”?•What is about the shape?
Objective: Learn the structure and functions of carbohydratesNew words: carbohydrate, glucose, ribose, ratio, glycogen, starch, cellulose, monosaccharide, polysaccharide
Carbohydrates•Carbohydrates are compounds made up of carbon, hydrogen, and oxygen atoms, usually in a ratio of 1:2:1
•They dissolve in water and their color is white.
•Living things use carbohydrates as their main source of energy. The breakdown of sugar, such as glucose, supplies immediate energy for all cell activities.
•Also, plants and some animals also use carbohydrates for structural purposes.
•For example, cellulose gives the plant much of their strength and rigidity. Cellulose is the major component of both wood and paper, so you are actually looking at cellulose as you read these words!
Objective: Learn the structure and functions of carbohydratesNew words: carbohydrate, glucose, ribose, ratio, glycogen, starch, cellulose, monosaccharide, polysaccharide
1. Carbohydrates are (organic/ inorganic) __________ molecules compounds.
2.They are made of the following elements:
3. The ratio between carbon, hydrogen and oxygen is the same as __________
4. They dissolve in _____________, usually their color is __________________
5. The jobs of carbohydrates are
Organic
Carbon, hydrogen, and oxygen
1:2:1
water white
1. Carbohydrates are the main source of energy
2. It gives plants strength and rigidity
Objective: Learn the structure and functions of carbohydratesNew words: carbohydrate, glucose, ribose, ratio, glycogen, starch, cellulose, monosaccharide, polysaccharide
Complex sugarComplex sugar
Objective: Learn the structure and functions of carbohydratesNew words: carbohydrate, glucose, ribose, ratio, glycogen, starch, cellulose, monosaccharide, polysaccharide
• Living things store extra sugar as complex carbohydrates known as starches•Single sugar molecules are also called monosaccharides.
• Simple sugar include glucose, galactose, which is a component of milk, and fructose, which is found in many fruits.
galactose
fructose
Objective: Learn the structure and functions of carbohydratesNew words: carbohydrate, glucose, ribose, ratio, glycogen, starch, cellulose, monosaccharide, polysaccharide
•.
•When the level of glucose in your blood runs low, glycogen is released from your liver. The glycogen stored in your muscles supplies the energy for muscle contraction and thus, for movement.
• Plants use a slightly different polysaccharide, called plant starch, to store excess sugar. Starch is present in potato, rice, and corn.
Starch
Objective: Learn the structure and functions of carbohydratesNew words: carbohydrate, glucose, ribose, ratio, glycogen, starch, cellulose, monosaccharide, polysaccharide
•The large macromolecules formed from simple sugar are known as complex sugar (polysaccharides).
• Many animals store excess sugar in a polysaccharide called glycogen, or animal starch.
Objective: Learn the structure and functions of carbohydratesNew words: carbohydrate, glucose, ribose, ratio, glycogen, starch, cellulose, monosaccharide, polysaccharide
DO NOW
List 4 things you already know about this molecule
1. Base on the handout with pictures of carbohydrates, arrange the pictures into simple sugar (monosaccharides) and complex sugar (polysaccharides).
Simple sugar (monosaccharides):
Complex sugar (polysaccharides):
Glucose, galactose, fructose, ribose
Cellulose, glycogen, starch
2. We eat carbohydrates in food, like
3. Glucose is important because
4. Starch is present in
Its function is
5. Glycogen is present in
Its function is
6. Cellulose is present in
Its function is
fruit, potato, rice, corn, pasta, bread
It supplies energy for all cell activities
Plants (potato, rice, corn)
To store excess sugar in plants
Animal muscles and liver
To store excess sugar in animal and supply energy to muscles
Plants in wood, cell wall and paper
To provide strength and rigidity in plants
Objective: Learn the structure and functions of carbohydratesNew words: carbohydrate, glucose, ribose, ratio, glycogen, starch, cellulose, monosaccharide, polysaccharide
Function
Function
Function
2 kinds of carboohydrates
Three examples
Found in
In animals In plants
Found in Found in Found in
Function Function
Main source of energy
Structural purposesGiving strength and rigidity
Simples Sugar Complex Sugar
GlucoseRiboseFructose
Juice, bloodMilk, fruit
Glycogen
MuscleLiver
Store excess sugar in plants
Starch
Potato Rice
Stores excesssugar in animals
Cellulose
Paper, woodCell wall
Givesstrengthrigidity
Carbohydrates
Objective: Learn the structure and functions of carbohydratesNew words: carbohydrate, glucose, ribose, ratio, glycogen, starch, cellulose, monosaccharide, polysaccharide
Objective: Learn the structure and functions of carbohydratesNew words: carbohydrate, glucose, ribose, ratio, glycogen, starch, cellulose, monosaccharide, polysaccharide
DO NOWList 4 things you already know about this molecule
Objective: Learn the structure and functions of carbohydratesNew words: carbohydrate, glucose, ribose, ratio, glycogen, starch, cellulose, monosaccharide, polysaccharide
DO NOWLook at the molecule below, what do you know about it?
Is it an organic or inorganic molecule?•Explain how you know
Is it a carbohydrate?•Explain how you know
What kind of carbohydrate?•Explain how you know.
What is the name of the molecule?•Where do you find it?•What is the job?
CARBOHYDRATES
CHARACTERISTICS or TRAITS
TWO MAIN FUNCTIONS
GLUCOSE
•Picture•Where do you find it?•Function
STARCH
•Picture•Where do you find it?•Function
CELLULOSE
•Picture•Where do you find it?•Function
GLYCOGEN
•Picture•Where do you find it?•Function
Objective: Learn the structure and functions of carbohydratesNew words: carbohydrate, glucose, ribose, ratio, glycogen, starch, cellulose, monosaccharide, polysaccharide
Objective: Learn the structure and functions of carbohydratesNew words: carbohydrate, glucose, ribose, ratio, glycogen, starch, cellulose, monosaccharide, polysaccharide
ContentStudent’s Credits
Teacher’s Credits
o Poster includes at least 4 carbohydrates traits (20 credits)
o Poster describes 2 main functions of carbohydrates (10
credits)
o Poster includes the following drawings molecules: glucose,
starch, cellulose, glycogen (10 credits)
o Poster includes where carbohydrates can be found (20 credits)
o Poster includes one function for each of the main