1.5 Water

Question 1

How much of our body mass is water?

Answer 1

60%

Question 2

Where is water found in the body?

Answer 2

Cells
Water in blood
Water in intercellular fluid between the cells

Question 3

Low water levels lead to…

Answer 3

Slowing down or stopping of reactions inside cells

Too little water in plasma, blood cannot be pumped around the body as easily

Question 4

We lose water through…

Answer 4

Water vapour
Breathing out
Sweating
Faeces
Urine

Question 5

Some drinks can have diuretic effects which means

Answer 5

Cause you to lose water because they increase the amount of water lost in urine

Question 6

Diuretic effect drinks are…

Answer 6

Alcohol
Spirits
Caffeine

Question 7

Water is treated with

Answer 7

Chlorine or UV light to make sure no harmful bacteria are present

Question 8

Soft water contains

Answer 8

Fewer mineral salts than hard water

Question 9

Loss of inorganic ions in sweat must be replaced and so will glucose therefore…

Answer 9

Drinking isotonic drinks have roughly the same water potential as the persons body fluids - should replace the lost water and ions as well as providing glucose for respiration

Question 10

Isotonic…

Answer 10

Solution that has the same water potential as your blood plasma