2.1 food & nutients

• Biologie
• Middelbare school
• vwo
• Leerjaar 2

Unit 2 Nutrition and digestion

start task

copy the subject + learning objectives from page 88.

schedule

- overview of chapter + next test          5

- theory: Food + nutrients                      20

- assignments                                              10

- closure                                                            2

 

overview

note in zuidschrift:

next test: in test week

Theme 2, bs1 - bs6.

learning objective

• You can name the functions of nutrients in foods.
• You know 6 groups of nutrients with their functions.

Nutrients: usable components in food

Dietary fibre: are indigestible parts of the plants 

vegetable products

Animal products

Foodstuffs

Function of Nutrients

• Building material: grow/develop/repair
• Fuels: by combustion in cells to provide energy
• Reserves: to store up
• protection: to stay healty  

6 groups of nutrients.

carbohydrates

fats

proteins

minerals

vitamins

Water

Carbohydrates

• includes: glucose, sugars, starch, glycogen
• primary used as fuel
• also: building material and reserves
• glucose high: converted into glycogen                                                                           and stored in liver and muscles.
• glucose drops: glycogeen converted into  glucose and released into the bloodstream

fats

• primarily used as fuel 
• also as buildingblock or reserves
• reserves are stored beneath your skin
• the subcutaneous fatlayer becomes                                                     thicker.
• we mostly eat more fat than we need

Proteins

• Important buildingblocks: 
• also: fuel
  
• Which foodstuffs contain proteins?
• beans, yoghurt, cheese, eggs, red meat, chicken, fish, tofu 

Water

• Building material!
• Your body is made up of 60% water
• has a key role in transporting substances around your body
• most substances can be only transported properly if they are dissolved  

Minerals (or salts)

- Buildingblocks. Like calcium for strong bones

- also protective substances

Vitamins

• building material and protection
• prevent illness
• (but consuming large quantities can be harmful)

-A: producing skin and seeing well

-B12: Red bloodcells

-C: defense / immunity

-D: Strong bones

(dietary) fibre

- Fibres belong to carbohydrates.

- We CANNOT DIGEST them and therefore 

   excrete them.

- FUNCTION:

  + Ensure good bowel function,

  + Give a feeling of fullness (feeling that you're full),

  + Reduce the risk of heart disease, diabetes, and colon cancer.

- Found in, for example, vegetables, fruit, whole grain products, legumes, and nuts.

Notes: functions of nutrients

Process the material

Do assignments 1, 2, 3, 7, 9, 10, 11 (pg. 92-96)

Use text from pg. 88 to 91.

Drag the nutrient functions to the correct description

Protect you against pathogens.

for energy

Are stored in your body.

Ensure recovery from injuries

protective substances

fuels

reserves

builing material

fats

proteins

carbs

Water

Minerals

Vitamins