Healthy food

• Biologie
• Middelbare school
• havo
• Leerjaar 3

MENS & NATUUR

Gezonde Voeding

Eating healthy

What is the foundation of eating healthy ?

1. A lot of carbohydrates
2. Variation
3. Not eating mea
4. Loads of vegetables

variation

 - schijf van vijf

safety

  - Harmfull toxins

  - Bacteria

  - Fungi

  - Virus

Healthy food

Have you or someone you know ever felt sick after eating something?
➡️ What do you think caused it?

Which of these do you think can make you sick from food?

1. Bacteria
2. Viruses
3. Parasites and fungi
4. all of the above

⚠️1. Bacteria

Salmonella, Listeria, E. coli, and Campylobacter 

grow on raw meat, unheated, not refrigerated foods, or not heated enough

🍄 2. Fungo (yeast)

Some produce mycotoxins 

old nuts, grains, rotten fruit

🦠 3. Viruses

norovirus or hepatitis A, 

contaminated water of poor hygiene (washing hands)

🧪 4. Chemicals
Pesticides and heavy metals (lead)

In fish

🌰 5. Food allergies 

Heavy immune response - peanut allergy

🧬 6. Parasites

Llintworms of toxoplasm

Raw of unheated meats, contaminated water

💡 How can you prevent this?

Cook meat, fish, and eggs thoroughly.

Wash your hands before cooking.

Keep perishable food refrigerated.

Work hygienically (clean kitchen tools, use separate cutting boards).

Read food labels (expiration dates, allergens).

Avoid raw milk cheese or raw fish for vulnerable groups (pregnant women, elderly, people with weakened immune systems).

2 different illnesses

Which of the items in the picture is in the
same food group als yoghurt and cheese?

1. bread and bananas
2. bread and milk
3. bananas and meat
4. milk and meat

Food from the freezer that has been defrosted, shouldn't be refrozen and defrosted again because it will increase the risk of a food infection or food poisoning. Explain what happens in the food that lead to this risk.

What does it mean that the orange part and the
green part of the 'schijf van vijf' have the same size?

1. that each meal contains the same weight of products from the orange and the green part
2. that each day all the meals together contain the same weight of products from the orange and the green part
3. that each meal contains the same amount of energy of the products from the orange and the green part
4. that each day all the meals together contain the same amount of energy of products from the orange and the green part

What nutrient can hardly be found in
the green part?

1. carbohydrates
2. fats
3. minerals and vitamins
4. proteins

Talking about healthy food is complicated. Give 2 reasons

chemical digestion

mechanical digestion

enzymes

chewing

to help swallow food more easily

surface area enlargement

digestive juices 

in the mouth

e.g. in stomach,  intestines

in the mouth

duodenum

large intestine

small intestine

rectum

anus

stomach

oesophagus

mouth

MOUTH

STOMACH

LIVER

OESOPHAGUS

DUODENUM

SMALL INTESTINE

LARGE INTESTINE

PANCREAS

Get to work

read 2.2 and 2.3

unit 2: Nutrition and digestion

make the exercises

https://www.youtube.com/shorts/2u4FRtT_qkY