Health and Lifestyle and ecosystem process

Question 1

What are the seven key nutrients?

Answer 1

Carbohydrates, Proteins, fibre, water, vitamins, minerals, lipids

Question 2

What are carbohydrates for?

Answer 2

To give my body energy

Question 3

What are vitamins and minerals for?

Answer 3

Needed in tiny amounts to keep my body healthy

Question 4

What are proteins for?

Answer 4

Needed for growth and repair of cells

Question 5

What are lipids (fats) for?

Answer 5

Needed for energy and to keep the body warm

Question 6

What is fibre for?

Answer 6

Needed to keep food moving through the system

Question 7

Why is it unhealthy to be underweight?

Answer 7

Less energy
Not enough fat to keep you warm
You can get many different illnesses
Lack of nutrients
Poor immune system
Suffer from anorexia, rickets

Question 8

Why is it unhealthy to be overweight?

Answer 8

Heart disease, diabeties, stokes, some cancers
No balanced diet

Question 9

What do you use to test for starch? (carbohydrates)

Answer 9

Iodine solution
If solution turns black, there are carbohydrates

Question 10

test for sugar?

Answer 10

Use benedicts solution
If solution turns orange/brown, there are sugars

Question 11

Test for protein

Answer 11

Add biurets solution
If solution turns violet, there are proteins

Question 12

Test for fats (lipids)

Answer 12

Add ethanol and some water
if solution goes cloudy, there are fats

Question 13

The digestive system

Answer 13

Mouth, oesophagus, stomach, small intestine, large intestine, rectum, anus.

Question 14

What are digestive enzymes?

Answer 14

Digestive enzymes are the chemicals that break large insoluble food molecules into smaller soluble food molecules.

Question 15

What is carbohydrase?

Answer 15

Breaks down carbs into smaller sugars. It is digested in the mouth, stomach, large intestine

Question 16

Protease?

Answer 16

Breaks proteins into amino acid. Broken down in the stomach + small intestine

Question 17

Lipase?

Answer 17

Breaks fat into fatty acids + glycerol. 3 fatty acid chains made.

Question 18

What are drugs?

Answer 18

Drugs are substances that affect the natural chemical processes in our bodies

Question 19

What are recreational drugs?

Answer 19

Used by people for pleasure

Question 20

What are medicinal drugs?

Answer 20

Used by people who suffer from diseases

Question 21

What are the withdrawal symptoms of not having drugs when addicted?

Answer 21

Headaches, anxiety, sweating

Question 22

What is a stimulant?

Answer 22

Drug that excites bodily functions. They make you more alert.

Question 23

What is a depressant?

Answer 23

Drugs that slows down bodily functions

Question 24

What are harmful effects of alcohol?

Answer 24

Stomach ulcers
Heart disease
Brain + liver damage

Question 25

Why should pregnant woman not drink?

Answer 25

Bad for the babies brain Miscarriage Still birth Premature birth Low weight births Foetal alcohol syndrome

Question 26

What are harmful effects of smoking?

Answer 26

Heart disease Gangrene Throat cancer Strokes Lung disease (Emphysema) Respiratory infections

Question 27

What is photosynthesis?

Answer 27

When a plan makes their own food using light

Question 28

What is the word equation for photosynthesis?

Answer 28

Carbon dioxide + water - glucose + oxygen

Question 29

What do plants do with the glucose made by photosynthesis?

Answer 29

They store it as starch and use it to grow Use it in respiration

Question 30

The 3 things needed for photosynthesis are sunlight, water and carbon dioxide

Answer 30

CORRECT

Question 31

The 2 things produced are glucose and oxygen

Answer 31

CORRECT

Question 32

Where does photosynthesis occur?

Answer 32

Chloroplast

Question 33

What are the four important minerals for healthy growth in plants?

Answer 33

Nitrate phosphates Potassium Magnesium

Question 34

Cellular Respiration:

Answer 34

Glucose + oxygen - carbon dioxide + water

Question 35

Where does cellular respiration happen?

Answer 35

in the mitochondria

Question 36

How does carbon dioxide leave the body?

Answer 36

goes into the body cells, then to the blood stream, then alveoli in lungs, and then it is exhaled in the air

Question 37

What does RBC contain?

Answer 37

Haemeglobin which joins oxygen and carries it around the blood

Question 38

Describe where and how respiration takes place

Answer 38

Respiration takes place in the mitochondria. To transfer energy stored in food, glucose reacts with oxygen in a chemical reaction called aerobic respiration. This transfers energy into your cells.

Question 39

What is Anerobic respiration equation?

Answer 39

glucose - lactic acid + energy WITHOUT OXYGEN

Question 40

What is a food chain?

Answer 40

A series of organisms each dependent on the next as a source of food.

Question 41

What is a producer?

Answer 41

They make their own food from the sun

Question 42

What is a consumer?

Answer 42

Eats other things?

Question 43

What is the order of the food chain?

Answer 43

producer primary consumer secondary consumer Tertiary consumer

Question 44

What is an ecosystem?

Answer 44

All the living and non - living organisms found in one place and how they interact.