Transcript TOPIC: Nutrition AIM: What are the parts & functions of the Digestive

Topic: Nutrition
Aim: Describe nutrition & the 2 types of
digestion.
Do Now:
HW:
Topic: Nutrition
Aim: Describe nutrition and the 2 types of
digestion.
Do Now: Describe the importance of
carbohydrates.
Take out your ISN activity from yesterday.
HW: Don’t forget the 5 food labels for
Thursday’s lab.
Science Fair Procedures due November 24th.
Nutrition
• When organisms
take in & use
materials needed
for energy & all
life processes
Processes
involved in
heterotrophic
nutrition
1. Ingestion: to take IN food
2. Digestion: breakdown of food
3. Egestion: removal of undigested
food (solid waste)
• Large pieces of food
Mechanical are broken down into
Digestion
smaller pieces
• Increases food’s surface area
to speed up chemical digestion
• Example:
–Teeth
–Churning
of food in
the stomach
Chemical • COMPLEX molecules
Digestion are broken down into
smaller molecules
• HOW? By using digestive
enzymes
• Carbohydrates  simple sugars
(glucose)
• Proteins  amino acids
• Lipids  glycerol and fatty acids
Let’s summarize…
1. Identify the two types of nutrition.
2. Describe the 3 processes involved with
heterotrophic nutrition.
3. Explain the difference between mechanical
and chemical digestion.
4. Where does mechanical digestion occur in
our bodies? Chemical digestion?
5. Identify the chemical needed for chemical
digestion to occur.
Identify the type of nutrition and digestion
that is being described.
1. Food is broken down into smaller pieces.
2. Organisms make their own food.
3. Carbohydrates are broken down into simple
sugars.
4. Increases surface area for chemical
digestion.
5. Proteins are broken down into amino acids.
6. Teeth are used to break down food.
7. Enzymes are used.