B2: Balanced Diet and Food Tests

Question 1

<p>Name the 7 components of a balanced diet.</p>

Answer 1

<p>Carbohydrates
Lipids (fats/oils)
Protein
Vitamins
Minerals
Fibre
Water</p>

Question 2

<p>Why do we need carbohydrates?</p>

Answer 2

<p>For energy</p>

Question 3

<p>Why do we need lipids?</p>

Answer 3

<p>For energy
Insulation
To protect organs</p>

Question 4

<p>Why do we need protein?</p>

Answer 4

<p>Growth and repair of cells</p>

Question 5

<p>Why do we need vitamins?</p>

Answer 5

<p>To prevent deficiency diseases</p>

Question 6

<p>Why do we need water?</p>

Answer 6

<p>For the chemical reactions in our cells.</p>

Question 7

<p>Why do we need fibre?</p>

Answer 7

<p>Adds bulk to food to keep it moving through the gut.</p>

Question 8

<p>What is the definition of a balanced diet?</p>

Answer 8

<p>A diet that contains the correct amounts and types of nutrients.</p>

Question 9

<p>Carbohydrates are found in which foods?</p>

Answer 9

<p>Sugary foods
Bread
Rice
Pasta</p>

Question 10

<p>Scurvy is caused by</p>

Answer 10

<p>Vitamin C deficiency</p>

Question 11

<p>Rickets is caused by</p>

Answer 11

<p>Vitamin D deficiency</p>

Question 12

<p>Why do we need Vitamin D?</p>

Answer 12

<p>For healthy teeth and bones.</p>

Question 13

<p>Where can we get vitamins and minerals?</p>

Answer 13

<p>Fruit and vegetables</p>

Question 14

<p>Is fibre digested and absorbed by the body?</p>

Answer 14

<p>No - it just adds bulk to food to help it pass through the digestive system.</p>

Question 15

Which solution do we use to test for sugars?

Answer 15

Benedict’s solution

Question 16

Which solution do we use to test for starch?

Answer 16

Iodine solution

Question 17

What colour is Benedict’s solution when it contains no simple sugars?

Answer 17

Blue

Question 18

What colour is iodine solution in the presence of starch?

Answer 18

Blue/Black

Question 19

How do you test for starch?

Answer 19

1. Add a few drops of iodine solution to a food sample.2. If solution turns blue/black starch is present.

Question 20

How do you test for simple sugars?

Answer 20

1. Add a few drops of Benedict’s solution to the food sample.2. Heat the test tube in a water bath.3. If the solution turns orange/red the food contains simple sugars.

Question 21

Energy in food is measure in which units?

Answer 21

Joules

Question 22

What happens if you consume more energy than you use?

Answer 22

You will gain weight.

Question 23

If someone does not eat enough food they may suffer from…

Answer 23

starvationmalnutrition

Question 24

Overweight people are at an increased risk of…

Answer 24

• Heart disease- Stroke- Diabetes- Some cancers

Question 25

What affects the amount of energy needed by your body?

Answer 25

• Age (affects growth rate)- Body size- Level of exercise