B1 - Human health and diet Flashcards Preview

Biology - Bethany DONE > B1 - Human health and diet > Flashcards

Flashcards in B1 - Human health and diet Deck (16):
1

Name the food groups and give their uses.

- carbohydrates for energy
- proteins for growth and repair
- vitamins for prevention of conditions such as scurvy
- minerals to make haemoglobin
- fibre to prevent constipation
- water to prevent dehydration

2

What does obese mean?

Obese means very overweight.

3

What are proteins made from?

Proteins are made from amino acids.

4

What are fats made up of?

Fatty acids and glycerol make up fats.

5

What are carbohydrates made up from?

Carbohydrates are made up of simple sugars.

6

How are carbohydrates stored?

Carbohydrates are stored in the liver as glycogen.

7

How are fats stored?

Fats are stored under the skin and organs as adipose tissue.

8

What are first class proteins?

First class proteins contain all essential amino acids and come from meat.

9

What are second class proteins?

Second class proteins do not contain all essential amino acids and come from plants.

10

Suggest what will happen to the glycogen in the liver if the body needs more energy.

It will be converted into glucose and used in respiration.

11

Why do teenagers need lost of protein?

Teenagers need lots of protein because they are growing.

12

Which two measurements are needed to calculate BMI?

Height and mass.

13

What causes kwashiorkor?

A lack of protein causes kwashiorkor.

14

What is the formula for EAR for protein?

mass in kg X 0.6

15

If my mass is 49 kg, what is my EAR?

29.4 g of protein.

16

Why does EAR vary?

- age meaning different rates of growth and repair
- pregnancy because the foetus will be growing
- lactation because of needing to provide milk