1.1 Keeping Healthy Flashcards Preview

AQA GCSE - Biology > 1.1 Keeping Healthy > Flashcards

Flashcards in 1.1 Keeping Healthy Deck (20)
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1

What two things do you need to keep healthy

Balanced diet and regular exercise

2

What are carbohydrates, fats and proteins used for

To release energy and build cells

3

What are needed in small amounts

Mineral ions and vitamins

4

Function of Carbohydrate

First energy source

5

Function if Protein

Muscle growth and repair
Produces haemoglobin

6

Function of Fat

Energy store
Protects vital organs
Absorbs: vitamins, minerals and water
Makes cell membrane

7

Function of Fibre

Helps the digestive system keep moving

8

Function of Vitamins

Essential for health and strong immune system

9

Function of Minerals

Calcium - bones and teeth
Iron - formation of red blood cells

10

Function of Water

Regulate body temperature
Allows chemical reactions to take place

11

What is malnourished person

Someone who's diet isn't balanced
And lack of proper nutrition caused by eating too much or too little

12

What can being underweight cause

Fatigue
Brittle bones
Possibly infertile

13

What can being overweight cause

Arthritis
Risk if heart attack
Type 2 diabetes

14

What word do you have to use when describing someone who is malnourished - 'overweight' and 'underweight'

Too

15

What happens when energy taken in is less than energy expended out

You lose mass

16

What increases amount of energy expended by the body

Exercise

17

What is the metabolic rate

The rate at which all the chemical reactions in the cells of the body are carried out

18

What is the metabolic rate effected by

Amount of activity you do
Muscle to fat ratio
Inherited factors

19

What do inherited factors affect other than metabolic rate

Cholesterol levels

20

People who exercise regularly are...

Usually healthier than people who exercise a little