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2.4 - Healthy food
2.4 - Healthy food
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Biologie
Middelbare school
vwo
Leerjaar 2
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Lesson duration is:
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2.4 - Healthy food
Slide 1 - Slide
Today's lesson
1. Review HW Q8 pg. 122
2. Formative test
3. The wheel of five
4. Energy
5. Weight and BMI
6. Eating disorders
7. Start BS 6 - Nutrition and digestion in mammals
Slide 2 - Slide
HEALTHY FOOD
Provides all the nutrients you need (carbohydrates, fats, protein, water, minerals & vitamins)
Does
not
contain more energy than you need.
Does
not
contain a lot of sugar, fat & salt.
Slide 3 - Slide
Wheel of five
Slide 4 - Slide
Energy
- most food is burned as fuel
-unit of energy is the Joule (j)
-1 kilojoule = 1,000 joules
-can also measure in calorie (cal)
- I kilocalorie = 1,000 cal
1 kcal = 4.2 kJ
Slide 5 - Slide
Amount of energy
-depends on gender, age, body size, exercise, climate, season
-examples:
sleeping = 4.2kJ per min
walking = 16.7 kJ per min
jogging = 29.3kJ per min
climbing stairs = 46.1 kJ/m
Slide 6 - Slide
BODY MASS INDEX
Slide 7 - Slide
Are you in balance?
Overweight?
Underweight?
Slide 8 - Slide
Eating disorders
Anorexia nervosa
: lose extreme amounts of weight
Bulimia nervosa
: vomit to get rid of the food, use large amounts of laxatives
Binge eating disorder:
moments of eating a lot
Slide 9 - Slide
Slide 10 - Video
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