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What is the function of the cell membrane?

It controls what enters and leaves the cell.

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Explain trend in why the ionisation energies increase across the period

As we travel along the period the nuclear charge increases, this increases the grip the nuclei of the atom has on the electrons. As they are on the same period they experience almost the exactly the same ...

Answered by Patrick J. • Chemistry tutor

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How do I differentiate?

If we have the curve y=x³+3x²-7x+5, to differentiate it we firstly multiply x by its power, and then reduce the power by one.Therefore x³ will differentiate to 3x²

Answered by William H. • Maths tutor

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How do you solve the equation 3(6x + 2) = 10 + 4x?

Begin by expanding the brackets of the LHS:3(6x + 2) = 18x + 6 3 * 6x = 18 x and 3 *2 = 6The equation now reads:18x + 6 = 10 + 4xSubtract 4x from both sides14x + 6 = 10Subtract 6 from...

Answered by James T. • Maths tutor

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Describe what happens at a synapse in the human body. (6 marks)

Synapses are the junctions between neurons. An electrical impulse travels down the first neuron and arrives at the presynaptic membrane. The presence of an electrical impulse causes chemicals called neuro...

Answered by Emma C. • Biology tutor

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