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How is water reabsorption carried out in the kidney?

When water levels are low in the blood, osmoreceptors in the hypothalamus detect this change and trigger the posterior pituitary gland to release a hormone called ADH. ADH binds to receptors on the cell memb...
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Answered by Jenna P. • Biology tutor
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Outline the Logical Problem of Evil and explain why it is a problem for the thiest.

The Logical Problem of Evil alleges that there is a logical inconsistency between the existence of God, as traditionally conceived, and the existence of evil. The formalised version of the argument reads:A. ...
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Answered by Joshua T. • Philosophy tutor
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If we take a number and square it, the answer is also the product of the two numbers either side of it plus one. Prove algebraically that this works for all numbers.

First of all let's give some examples: 5^2=4x6+1 = 25 or 6^2 = 5x7+1 = 36. To prove it for every number let's call the number x (e.g. x was 5 and 6 in the cases above). Then the result we want to prove is x^...
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Answered by Miles M. • Maths tutor
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What is price elastic demand?

The textbook definition of price elastic demand is when % change in quantity demanded (QD) is greater than the % change in price (P). This can be viewed in the formula for price elasticity of demand: %change...
Answered by • Economics tutor
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How would I answer the exam question: Explore Philip Larkin’s portrayal of time in ‘Next Please’ and one other poem. You must discuss relevant contextual factors.

The first thing you need to do is flick to this poem in your anthology to remind you of its content and how the theme – in this case time – is presented. Ask yourself - how is time presented in this poem? Is...
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Answered by Rosalie B. • English tutor
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