Food and Nutrition

Question 0

Chemical elements in carbohydrates

Answer 0

Carbon
Hydrogen
Oxygen

Question 1

Carbohydrates are needed for

Answer 1

Energy

Question 2

Chemical elements in lipids

Answer 2

Carbon
Hydrogen
Oxygen
Just like carbohydrates but much less oxygen

Question 3

Diagram of a carbohydrate

Answer 3

Glucose is a pentagon
Starch is lots of pentagons in a line
•-•-•-•-•-•-•-•-•-•-•

Question 4

Lipids are needed for

Answer 4

Insulation
Protection of organs
Long term energy store

Question 5

Diagrams of lipids

Answer 5

Rectangle with 3 zigzags coming from the right
|||||/\/\/\/\/\/
|||||/\/\/\/\/\/
|||||/\/\/\/\/\/

Question 6

Food sources of lipids

Answer 6

Chocolate
Butter
Cream

Question 7

Proteins are needed for (2)

Answer 7

Growth and repair

Enzymes are proteins

Question 8

Chemical elements in proteins

Answer 8

As usual:
•Carbon
•Hydrogen
•Oxygen
But also:
•Nitrate
•Sulphate
•Phosphorus

CHONSP

Question 9

True or false:

Enzymes are made of protein

Answer 9

True

Question 10

Good food sources of protiens

Answer 10

Eggs
Fish
Meat
Milk

Question 11

Diagram of protiens

Answer 11

Amino acids in a chain
Amino acids are lots of different shapes
Pentagon
Triangle
Circle

Question 12

Proteins are made up of:

Answer 12

Amino acids

Question 13

What do you use to test for sugar

Answer 13

Benedicts

Question 14

What do you use to test for starch

Answer 14

Iodine

Question 15

What do you use to test for protein

Answer 15

Biuret

Question 16

What do you use to test for lipids

Answer 16

Ethanol

+ water

Question 18

Positive and negative test for:

Sugar

Answer 18

Colour changes from: Blue to Green to Yellow to Orange to Brick red
Positive: Brick red or orange
Negative: Blue

Question 19

Positive and negative test for:

Starch

Answer 19

Positive: Blue/Black
Negative: Stays Orange/Brown

Question 20

Positive and negative test for:

Protein

Answer 20

Positive: Lilac
Negative: Pale Blue

Question 20

Test details for sugar:

Answer 20

Put glucose solution into test tube
Add a few drops of Benedict’s
Put test tube into boiling water

Question 21

Positive and negative test for:

Lipids

Answer 21

Positive: Cloudy
Negative: Clear

Question 22

Test details for starch:

Answer 22

Add a few drops of iodine to starch solution

Question 23

Test details for lipids:

Answer 23

• Add 2cm cubed of ethanol to some cooking oil
• Shake test tube
• Add 2cm cubed of water
• Shake again

Question 24

Test details for protein:

Answer 24

Add a few drops of Biuret B followed by a few drops of Biuret A to protein solution

Question 25

What is starch a polymer of

Answer 25

Long chain of glucose

Question 27

What is starch a polymer of

Answer 27

Glucose

Question 27

What is glycogen a polymer of

Answer 27

Glucose

Question 28

Name 7 components needed for a balanced diet

Answer 28

``` Carbohydrates---Can Lipids---Luke Proteins---Puke Minerals---Much Vitamins---Vomit Water---Without Fibre---Fail ```

Question 29

What are the 2 building blocks of lipids

Answer 29

Fatty acids | Glycerol

Question 30

What is an essential amino acid

Answer 30

An amino acid which is needed to make protein that we need to have from our diet

Question 31

Which food type contain starch

Answer 31

Carbohydrates

Question 32

If you rub fat on a piece of paper then it will go ____________

Answer 32

Translucent

Question 33

Where is cholesterol made

Answer 33

The liver

Question 34

What is fibre

Answer 34

Undigestible plant material

Question 35

Why do we need minerals

Answer 35

Help release energy from food

Question 36

We need fibre because:

Answer 36

It helps digestion

Question 37

Why do we need vitamins

Answer 37

To help us concentrate | Staying calm making quick decisions

Question 38

Why can't humans digest cellulose

Answer 38

Our gut doesn't create the correct enzyme

Question 39

Foods which contain vitamin A

Answer 39

Carrots

Question 40

Foods which contain iron:

Answer 40

Fish Red meat Broccoli

Question 41

Foods that contain vitamin C

Answer 41

Oranges Lemons Lime

Question 42

Foods which contain calcium:

Answer 42

Milk Yoghurt Cheese

Question 43

Deficiency disease: | Calcium

Answer 43

Rickets

Question 44

Foods which contain vitamin D

Answer 44

Eggs

Question 45

Deficiency disease: | Vitamin A

Answer 45

Night blindness

Question 46

Deficiency disease: | Vitamin C

Answer 46

Scurvy

Question 47

Importance of: | Iron

Answer 47

Makes haemoglobin for healthy blood | Prevents anemia

Question 48

Deficiency disease: | Vitamin D

Answer 48

Rickets

Question 49

Symptoms of Rickets:

Answer 49

Bone deformity

Question 50

Symptoms for night blindness

Answer 50

Vitamin is needed to make a light sensitive chemical in the retina Poor vision in dim light

Question 51

Symptoms of Anemia:

Answer 51

``` Can't make haemoglobin for red blood cells Tired, lack of energy Blood can't carry enough oxygen Weakness Pale skin Shortness of breath Dizziness ```

Question 52

Symptoms of scurvy

Answer 52

Wounds can't heal and bleeding occurs especially around gums

Question 53

What does obese mean

Answer 53

Clinically overweight

Question 54

Energy requirements depend on

Answer 54

Age Gender Body size Occupation

Question 55

How to find the energy in food

Answer 55

It takes 4.2J of energy to increase the temperature of 1 gram of water by 1°C Therefore energy = Mass of + temperature change x 4.2 water

Question 57

Energy in food calculation

Answer 57

Energy in food (J) = mass of water (g) x temperature change of water (degrees C) x 4.2

Question 58

What is a polymer

Answer 58

A substance which has molecular structure built up from a large number of similar units bonded together

Question 59

Carbohydrates are made up of starch (which is made up of __________ and glycogen (which is made up of ____________)

Answer 59

Maltose | Glucose

Question 60

Importance of calcium:

Answer 60

Makes bones and teeth

Question 61

Importance of Vitamin D

Answer 61

Needed for calcium absorption