You can describe the functions of digestion, digestive juices and enzymes
You can list parts of your dentition and their functions
You can describe the function of peristalsis an how it works
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Slide 1: Diapositive
BiologieMiddelbare schoolhavo, vwoLeerjaar 2
Cette leçon contient 23 diapositives, avec quiz interactifs, diapositives de texte et 1 vidéo.
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B2 The digestive system
Take off your jacket
Put your things on your desk
Book, notebook, pencil case
Bag on the floor
Read pages 97-99
timer
4:00
Lessongoals
You can describe the functions of digestion, digestive juices and enzymes
You can list parts of your dentition and their functions
You can describe the function of peristalsis an how it works
Slide 1 - Diapositive
Wheel of homework
Go to Lessonup.app and use this code
Reward
Penalty
Homework: 1-9, 4c, 8c, 10c pgs. 92-95
Slide 2 - Diapositive
Which of these statements is FALSE
A
Fruit contains lots of vitamins
B
Vitamins can be used as building material for the body
C
Vitamins help protect your body
D
Vitamins can be used as reserves
Slide 3 - Quiz
Which of these statements is TRUE ?
A
Foodstuffs are in nutrients
B
Foodstuffs and nutrients are synonymous
C
Nutrients are in foodstuffs
Slide 4 - Quiz
Which of these statements is FALSE
A
All carbohydrates are sugars
B
Carbohydrates can be used as building materials
C
Carbohydrates can make people fat
D
Carbohydrates can be used as fuels
Slide 5 - Quiz
Too big to take in, needs digestion
Proteins
(most) carbohydrates
Fats
No digestion needed:
Glucose
Minerals
Vitamins
Water
Intestines take up the nutrients inside food.
Not all nutrients can enter the body without digestion
Slide 6 - Diapositive
Digestion
Digestion = breaking nutrients into smaller substances (so they can enter the body)
Mechanical and chemical digestion
Chewing and digestive juices
Slide 7 - Diapositive
Why chew?
Digestive juices need to digest nutrients
Chewing makes the surface area bigger
Slide 8 - Diapositive
You've got a cube of 1x1x1 cm. What is the surface area of this cube?? ...... cm2 (only the number)
Slide 9 - Question ouverte
The cube of 1x1x1 cm is cut in to 8 similar sized smaller cubes of 0,5x0,5x0,5 cm. What is the surface area of one of these cubes? ..... cm2 (only the number)
Slide 10 - Question ouverte
How big is the surface area of the 8 cubes together? ....cm2 (only the number)
Slide 11 - Question ouverte
Why chew?
Chewing creates a bigger surface area.
bigger surface area = more surface where digestive juices can do their job = more and quicker digestion
surface area of 6 cm2
surface area of 1,5 cm2
together 12 cm2
Slide 12 - Diapositive
Dentition (all teeth together)
Crown
Root
incisor canine molar
cutting off parts of food
cutting off pieces of food
grabbing on to food (mainly used by predators when capturing their prey)