Nutrients, food test, unhealthy diet

Question 1

Nutrients

Answer 1

• Essential substance that is required in order to survive

- sourced by food

Question 2

Carbohydrate

Answer 2

Nutrients that provides energy

-Brocken down into Sugars

Question 3

Lipids

Answer 3

Fat

Provides energy and warmth

Question 4

Protein

Answer 4

Helps growth and repairs

Question 5

Vitamin and mineral

Answer 5

Nutrients needed to be healthy

Question 6

Fibre

Answer 6

• not a nutrient
• bulk that punches food through digestive system
• prevents constipation

Question 7

Balanced diet

Answer 7

-eating food containing right nutrients in the right amounts

Question 8

Lipids use

Answer 8

• provide energy/ store energy
• insulates body
• protects certain organs from damage (heart + kidneys)

Question 9

Vitamins benefits

Answer 9

• vitamin a = good eyesight
• vitamin d = strong bones and teeth
• vitamin c = heels wounds
• vitamin b = healthy nervous system

Question 10

Water benefits

-

Answer 10

• 70% of cells made up of water
• Hydration
• Cooling body down/ sweat

Question 11

Food test

Answer 11

Chemical test taken to identify nutrient in particular food

Question 12

Hypothesis

Answer 12

An idea that is used as an explanation for observations

Question 13

Test for starch

• chemical
• colour of chemical
• colour of positive result

Answer 13

• chemical= iodine
• chemical colour= amber
• positive result= dark blue/ black

Question 14

test for protein

• chemical
• colour of chemical
• colour of positive result

Answer 14

• chemical= biuret (or copper sulphate and sodium hydroxide)
• colour of chemical= blue
• colour of positive result=purple

Question 15

Test for sugar

• chemical
• colour of chemical
• colour of positive result
• how

Answer 15

• chemical= benedict’s solution
• colour of chemical=blue
• colour of positive result= orange - red=high amount, green-yellow=low amount.
• how=heat in water bath

Question 16

Test for lipids

• chemical
• colour of chemical
• colour of positive result

Answer 16

• chemical=ethanol
• colour of chemical=clear
• colour of positive result= cloudy white

Question 17

Joules

Answer 17

• unit measures energy

- 1000=1k joules (kJ)

Question 18

Calculate energy

Answer 18

Energy = volume of water(cm3) x 4.2 (j/g/.c) x temperature difference

Question 19

7 components of a Balanced diet

Answer 19

Fibre
Lipids
Carbohydrate 
Protein
Vitamins
Minerals
Water

Question 20

possible Effects of being overweight

Answer 20

• diabetes
• strokes
• Heart disease
• joint pains

Question 21

Deficiencies of vitamin:
A, c,
+calcium and iron

Answer 21

Lack of vitamin a= bad eyesight
Lack of vitamin c= scurvy/gum disease/ sore limbs/tiredness
Lack of iron= anemia - tiredness, dizzy, low energy
Lack of calcium= brittle bones

Question 22

Effects of being underweight

Answer 22

• poor immune system
• tired
• lack of energy