Nutrition & Healthy Eating

Question 1

4 main reasons for eating

Answer 1

Habit, social, sensory, psychological

Question 2

Main hormone responsible for feelings of hunger

Answer 2

Ghrelin

Question 3

Can the brain block the effects of Ghrelin?

Answer 3

Yes - being busy

Question 4

What are the component molecules of proteins called?

Answer 4

Amino acids

Question 5

How are proteins created

Answer 5

Joining up amino acids in specific order/quantity

Question 6

How many amino acids are there?

Answer 6

About 20

Question 7

How many amino acids are essential?

Answer 7

8

Question 8

What does essential mean?

Answer 8

Has to be sourced from the diet

Question 9

How much protein per kg does the average person need?

Answer 9

0.75g per kg

Question 10

What do help with?

Answer 10

Growth & repair (muscles, hair, nails, tendons etc), parts of the immune system and enzymes.

Question 11

What is the process for removing excess amino acids?

Answer 11

The liver breaks down the part of the amino acid that contains nitrogen and coverts it to urea. The urea is then processed from the blood by the kidneys and then is urinated out.

Question 12

Put simply, what is meant by a ‘Protein Sequence’

Answer 12

The order of amino acids in a protein.

Question 13

What does a fat molecule ‘look’ like?

Answer 13

A ‘head’ of glycerol and three fatty acid ‘tails’

Question 14

Solid fat will have what tails?

Answer 14

Straight

Question 15

Monounsaturated fats have what tails?

Answer 15

One bent tail, the rest straight

Question 16

Polyunsaturated fats have what tails?

Answer 16

Tails with 2 or more bends

Question 17

How much fat is advised per day?

Answer 17

70g

Question 18

What is the suggested limit of saturated fats per day?

Answer 18

20g

Question 19

What do fats do in the body?

Answer 19

Energy source, cell membranes, nerve insulation, warmth, immune and heart functions