5 - Digestive enzymes

LESSON 5
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Cette leçon contient 37 diapositives, avec quiz interactifs, diapositives de texte et 2 vidéos.

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LESSON 5

Slide 1 - Diapositive

Review lesson 1:
  • Nutrients 
  • Sources and Uses 

Slide 2 - Diapositive

What is sodium an example of?
A
carbohydrates
B
water
C
minerals
D
vitamins

Slide 3 - Quiz

What are peaches a good source of?
A
carbohydrates
B
water
C
fibres
D
proteins

Slide 4 - Quiz

What are raw nuts a good source of?
A
carbohydrates
B
water
C
fibres
D
proteins

Slide 5 - Quiz

Review lesson 2:
  • balanced diets
  • dietary choices
  • psychological issues with food

Slide 6 - Diapositive

Someone who is a ovotarian does not eat ..... and does eat .........?
A
vegetables, cheese
B
meat, eggs
C
meat, fish
D
vegetables, fish

Slide 7 - Quiz

Explain the difference between a vegetarian and a pescatarian.

Slide 8 - Question ouverte

Which religion does not allow any alcohol and any pork products?
A
Islam
B
Buddhism
C
Judeism
D
Christianity

Slide 9 - Quiz

Review lesson 3:

  • Deficiencies
  • Diabetes
  • Unhealthy lifestyles

Slide 10 - Diapositive

What deficiency is caused by a lack of iron?
A
scurvy
B
rickets
C
anemia
D
marasmus

Slide 11 - Quiz

What deficiency is caused by a lack of vitamin C?
A
scurvy
B
rickets
C
anemia
D
marasmus

Slide 12 - Quiz

What deficiency is caused by a lack of vitamin D & calcium?
A
scurvy
B
rickets
C
anemia
D
marasmus

Slide 13 - Quiz

Which type of diabetes is preventable?
A
type 1
B
type 2

Slide 14 - Quiz

Review lesson 4:
  • How does our body process the food?
  • Fases of digestion
  • Teeth

Slide 15 - Diapositive

What does ingestion mean?
A
moving the food into your body
B
biting and chewing food

Slide 16 - Quiz

MOUTH
STOMACH
LIVER
OESOPHAGUS
DUODENUM
SMALL INTESTINE
LARGE INTESTINE
PANCREAS

Slide 17 - Question de remorquage

crown
root
dentine
pulp
jaw bone
gums
enamel
nerves & bloodvessels

Slide 18 - Question de remorquage

HW FOR TODAY:
  1. HW  for lessons 2-5 should be completed and handed in.
  2. Did you check you did it to the correct  level?
  3. Answer sheets are uploaded on the stream.
  4. Any questions until now?

Slide 19 - Diapositive

LESSON 5

Slide 20 - Diapositive

TODAY:
  • Chemical digestion (mouth)
  • Chemical digestion (stomach)
  • Chemical digestion (duodenum)
  • Absorption (villi)

Slide 21 - Diapositive

INGESTION:
MOVING THE FOOD INTO YOUR MOUTH

Slide 22 - Diapositive

MECHANICAL DIGESTION:

  • BREAKING THE FOOD INTO SMALLER PIECES.
  • THIS IS DONE BY YOUR TEETH
  • BITING AND CHEWING

Slide 23 - Diapositive

Slide 24 - Vidéo

CHEMICAL DIGESTION:
  • BREAKING THE FOOD INTO EVEN SMALLER PIECES.
  • USING ENZYMES TO BREAK DOWN THE FOOD MOLECULES. 

Slide 25 - Diapositive

KERBOODLE PAGE 54

Slide 26 - Diapositive

STEP 1:
MOUTH
STEP 2:
STOMACH
STEP 3:
DUODENUM

Slide 27 - Diapositive

Chemical digestion step 1: 
  • the place: the mouth (esophagus)
  • the enzyme: amylase
  • the liquid: saliva
  • the nutrient: carbodrates
  • the products: glucose & maltose

  • The enzymes in your saliva start breaking down the carbohydrate molecules into maltose and glucose.

Slide 28 - Diapositive

Chemical digestion step 2: 
  • the place: the stomach
  • the enzyme: protease
  • the liquid: chyme and hydrochloric acid
  • the nutrient: proteins
  • the products: amino acids

  • The enzymes in your chyme start breaking down the protein molecules into amino acids.

Slide 29 - Diapositive

Extra info about the stomach: 
  • the place: the stomach
  • the enzyme: rennin
  • the liquid: chyme
  • the nutrient: milk
  • the products:turns the proteins in milk solid and lump together so it is easier to digest

Slide 30 - Diapositive

Before chemical digestion step 3: 
  • the place: liver
  • the enzyme: none
  • the liquid: bile
  • the nutrient: fats

  • Bile is an alkaline and neutralises the acid in the chyme. (drops the pH).
  • Bile emulsifies (breaks chemical bonds) fats. Splits it into smaller drops

Slide 31 - Diapositive

Chemical digeston step 3: part A
  • the place: the duodenum
  • the enzyme: lipase
  • the liquid: chyme and bile
  • the nutrient: fats
  • the products: fatty acids and glycerol

Slide 32 - Diapositive

Chemical digestion step 3: part B
  • the place: the duodenum
  • the enzyme: amylase
  • the liquid: chyme 
  • the nutrient:carbohydrates and maltose
  • the products: glucose

Slide 33 - Diapositive

Chemical digestion step 3: part C
  • the place: the duodenum
  • the enzyme: protease
  • the liquid: chyme 
  • the nutrient:proteins
  • the products: amino acids

Slide 34 - Diapositive

Slide 35 - Vidéo

Slide 36 - Diapositive

Homework: 
  • Complete the hw on classroom to your correct level.
  • Study the Quizlet of "Glossary Food & Digestion" (100% on learn, match, flashcards &  test) 

Slide 37 - Diapositive