(a(i))[1]
Explain what the term water potential means.
(a(ii))[1]
Describe what happens to water potential when solute is added to a solution.
(a(iii))[1]
State the exact place from which ADH is released into the blood.
(a(iv))[1]
The fall in the water potential of the blood is sometimes caused by water being lost from the body of a mammal. List two ways in which water can be lost from the body.
(b)[5]
Describe the effect of ADH on the kidney.
(c)[2]
Diabetes insipidus is a condition caused by an inability to produce ADH or by the kidneys being unable to respond to ADH. Suggest symptoms that may be experienced by a person who has diabetes insipidus.