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Science Year 8 > Nutrition > Flashcards

Nutrition Flashcards

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1
Q

Nutrition

A

What you eat

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2
Q

Balanced diet

A

Right amount of the 5 nutrients as well as fibre and water

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3
Q

Carbohydrates

A

Needed for energy

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4
Q

Protein

A

Growth
Repair cells

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5
Q

Fats (lipids)

A

Used to keep heat in
Make cell membranes

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6
Q

Vitamins and minerals

A

Iron is in the blood for haemoglobin
Calcium is for healthy bones and teeth
Vitamin C- lack causes scurvy

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7
Q

Fibre

A

Its not digested, it keeps food moving

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8
Q

Water

A

Used for sweating- cools us down
Chemical reactions
To make urine
Most of our blood is water

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9
Q

Where do you get energy from in your body?

A

Carbohydrates and fats in your diet

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10
Q

What does the amount of energy you need depend on

A

Your body mass and level of activity

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11
Q

How many kj do you need for every kg of body mass?

A

5.4 kj

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12
Q

How do you calculate the basic energy requirement

A

Daily BER= 5.4 x 24 hours x body mass
A 60kg person requires:
5.4 x 24 x 60 = 7776 kj/day

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13
Q

How do you find how much energy you need in a day

A

Add together your daily BER and the extra energy you use in you activities

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14
Q

Obesity

A

If you take in more energy from your diet than you use, your body will store the extra energy as fat, so you will put on weight.

Obesity can lead to health problems such as high blood pressure and heart disease.

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15
Q

Starvation and deficiency diseases

A

Some people don’t get enough vitamins or minerals, this can cause deficiency diseases. Lack of vitamin C can cause scurvy. Deficiency disease causes problems with the skin, joints and gums.

Effects of Starvation are slow growth in children, being more likely to get infections and irregular periods in women.

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16
Q

Why is fibre not a nutrient

A

It only helps digestion system, gets rid of waste and prevents constipation

17
Q

What do you use to test carbohydrates: starch

A

Iodine

18
Q

When testing starch what is the colour at the start and the end

A

Start: orange/yellow
End: blue/black

19
Q

What do you use to test for carbohydrates: glucose

A

Benedict solution

20
Q

When testing for glucose what is the colour at the start and at the end

A

Start: blue
End: green- least amount of glucose, orange/red the most

21
Q

What do you use to test for protein

A

Biuret

22
Q

When testing for protein what is the colour at the start and at the end

A

Start: blue
End: purple

23
Q

What do you use to test for fat

A

Grease proof/ filter paper

24
Q

When testing for fat what is the colour at the start and at the end

A

Start: white
End: translucent

25
Q

What foods contain alot of starch

A

Rice, bread and potatoes

26
Q

What foods dont contain alot of starch

A

Sugar and salt

27
Q

Whats food used for inside your body

A

Giving you energy, growing and repairing, keeping you healthy

28
Q

What food contains alot of protein

A

Egg albumin

29
Q

What food doesn’t contain alot of protein

A

Milk powder

30
Q

What food contains alot of fat

A

Butter

31
Q

Why is someone who is very overweight suffering from malnutrition

A

They have lack of nutrition and over-consumption of foods that are high in calories

32
Q

Symptoms caused from kwashiorkor

A

Poor hair growth
Stunted height
Large stomach

Caused by lack of protein

33
Q

Symptoms of night blindness

A

Cant see well in dim light

Caused by lack of vitamin A

34
Q

Symptoms of scurvy

A

Bleeding gums
No skin growing on gums

Caused by lack of vitamin C

35
Q

Symptoms of rickets

A

Bones do not develop
Bow legged

Caused by lack of vitamin D

36
Q

Symptoms of anaemia

A

Causes tiredness

Caused by lack of iron

37
Q

How to find the surface area

A

Height x width= surface area

Science Year 8 (1 decks)

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