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Describe the process of synaptic transmission at the neuromuscular junction.

The neuromuscular junction describes the chemical connection between a presynaptic nerve, and the muscle fibre membrane (sarcolemma). Depolarisation of the presynaptic nerve membrane (by propagation of an ac...
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Answered by Eleanor M. • Biology tutor
2901 Views

Find the coordinates of the sationary points on the curve x^2 -xy+y^2=12

To find stationary points, we need to find dy/dx and set it equal to 0. Here we must use implicit differentiation: d/dx(x 2 ) + d/dx(-xy) + d/dx(y 2 ) = d/dx(12). Hence 2x - x(dy/dx) - y + 2y(dy/dx) = 0. Fac...
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Answered by Adam B. • Maths tutor
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Why do first ionisation energies decrease down a group but increase across a period?

The nucleus contains positively charged protons which attract the negative electrons, the first ionisation energy is the energy required to overcome this attraction and remove 1 electron As you go down a gro...
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Answered by Amy M. • Chemistry tutor
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How can I distil all of my quotes so I can remember them for the exam?

In my revision for my English Lit A Level, I used quote banks to organise my ideas and make essay planning more efficient. These are tables in which the left side shows themes within the text and the top has...
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f(x) = x^3+2x^2-x-2 . Solve for f(x) = 0

f(x) = x 3 + 2x 2 - x - 2 Use the factor theorem to test for f(1) = 0 f(1) = 1 3 + 2*1 2 - 1 - 2 = 0 Therefore x = 1 is a solution and (x-1) is a factor of f(x) Now factorise f(x) x 3 + 2x 2 - x - 2 = (x-1)(...
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Answered by Elena S. • Maths tutor
5642 Views