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Why do you want to be a doctor and not a nurse?

This is a very common and difficult question at interview. Answers such as "I want to help people" will not get you very far as Lollipop Ladies "help people". Saying anything along the li...
CR
16576 Views

How can I critically engage with an argument that I support/like?

It is important to remember that when writing essays in exams, the examiner is interested in the way in which you engage with the question and not merely the content of the course. What is so exciting about ...
MW
5253 Views

How could you increase the rate of a chemical reaction?

The collision theory states that when two or more particles have sufficient energy and orientation, the collision will be successful in producing a reaction. There are many ways to increase the rate of a che...
JZ
Answered by Julia Z. • Chemistry tutor
2834 Views

Integrate a^x with respect to x

This comes up in C4 in A level maths and differentiating it could come up in C3. You can write a^x as exp(ln(a^x))=exp(xln(a)) then differentiating this, you get ln(a) exp(xln(a))=ln(a)a^x. By differentiatin...
JW
Answered by John W. • Maths tutor
40931 Views

Give an example of a negative feedback mechanism in the human body.

When the hypothalamus in the brain detects that the blood is getting too concentrated (not enough water), it stimulates the pituitary gland to release an anti-diuretic hormone (ADH). When it reaches the kidn...
PM
Answered by Paul M. • Biology tutor
7870 Views