Search our library of A Level questions

Top answers

All subjects

A Level

Explain how applying increasing pressure to a Pacinian corpuscle produces a larger change in membrane potential.

When pressure is applied to a Pacinian corpuscle the membrane is distorted, opening the stretch-mediated Na+ channels. This then allows Na+ ions to move in down their concentration gradient which increase...

Answered by Madeleine C. • Biology tutor

12729 Views

Integrate 2x^4 - 4/sqrt(x) + 3 dx

First we will simplify 4/sqrt(x) so it is easier to integrate.sqrt(x) is equal to x^1/2, therefore 4/sqrt(x) = 4/x^1/2.We bring up x^1/2so 4/x^1/2 becomes 4x^...

Answered by Maleehah A. • Maths tutor

7986 Views

Differentiate Y = 4X/(X^2+5) and give dy/dx in its simplest form

4(5-X^2)/(X^2+5)^2

Answered by Mohamed S. • Maths tutor

4036 Views

Evaluate the extent to which general elections in the UK are lost by the government rather than won by the opposition (30) (Edexcel Sample Assessment Materials)

This question encourages you to think about the two sides of the argument as to why changes of government happen - i.e. is it the government's fault, or the skill of the opposition. You must come to a jud...

Answered by Joanne R. • Politics tutor

20509 Views

HOW HAVE FAMILY AND MARRIAGE PRACTICE CHANGED HISTORICALLY AND INTERNATIONALLY?

HOW HAVE FAMILY AND MARRIAGE PRACTICE CHANGED HISTORICALLY AND INTERNATIONALLY?Historical research suggests periods between typical forms of family structure and its functions for society...

Answered by Junior U. • Sociology tutor

6206 Views