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Describe and explain how the secretion of ADH affects urine production in the kidneys (4 marks)

ADH diffuses into the blood stream and binds to receptors present on the lining of the collecting duct/ DCT (1)This increases the permeability of the membrane of the collecting duct/ DCT (1)Therefore, mor...

Answered by • Biology tutor

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There is an oil tank that has a rectangular base of dimensions 2.4 m by 1.5 m. The tank is filled with oil of density 850 kg / m3 to a depth of 1.5 m. What is the mass of the oil?

2.41.51.5*850=4590kg

Answered by Rajiv J. • Physics tutor

3754 Views

y is inversely proportional to d^2 and when d = 10, y = 4. d is directly proportional to x^2 and when x = 2, d = 24. Find a formula for y in terms of x. Give your answer in its simplest form.

Firstly, find proportionality equation between the two variables. This should be shown as d = kx^2 and y = b/d^2.Solve to find constants of proportionality of a=6 and b=400. Eliminating for d, find that y...

Answered by Jiangying (Susan) C. • Maths tutor

4967 Views

Outline and explain two push factors in rural to urban migration.

One push factor may be a lack of health and education services in rural areas. For example, in the UK many small towns and villages lack a hospital or secondary school, meaning people have to travel in or...

Answered by Isabelle C. • Geography tutor

3792 Views

How would you differentiate between the hypotenuse, opposite and the adjacent in a triangle?

Firstly, in a right angled triangle, the side opposite the right angle is always the hypotenuse which is the longest side in a right angle triangle. Secondly, the side opposite the given angle is your opp...

Answered by Jenny C. • Maths tutor

3128 Views