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How should I structure my essay?

You should start thinking about essay structure when planning your answer. Break the essay down into intro, 3 or 4 paragraphs and a conclusion. The purpose of the into is to 'unpick' the question - discuss k...
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Answered by Harjas D. • History tutor
2769 Views

Calculate Gibbs free energy when S = 131 J mol-1 and H = 155 kJ mol-1 at 25 C, stating whether or not the reaction is feasable.

First, make sure everything is in the correct units: H = 155 kJ mol-1 = 155000 J mol-1 S = 131 J mol-1 T = 25 C = 298K Then use the Gibbs equation to calculate the free energy: G = H - TS G = 155000-298*131 ...
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Answered by Isaac H. • Chemistry tutor
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The black mamba’s toxin kills prey by preventing their breathing. It does this by inhibiting the enzyme acetylcholinesterase at neuromuscular junctions. Use your knowledge of muscle contraction to explain how this prevents breathing.

By inhibiting the enzyme acetylcholinesterase, the neurotransmitter acetylcholine does not get broken down. This causes acetylcholine to build up in the synapse between the motor neurones and muscles of resp...
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Answered by Tashi C. • Biology tutor
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Outline the importance of the junctions between neurones in the functioning of the nervous system

DEFINE: Key words What is a junction, what is a neurone and what is the nervous system? So, the nervous system connects all the nerve cells and fibres which transmit nerve impulses from one part of the body ...
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Answered by Natasha K. • Biology tutor
7661 Views

Is it fair to describe Augustus' foreign policy as a matter of aggressive expansionism?

This question is highly debated by scholarship, but it's important in understanding what framework Augustus built for the Empire. Contemporary sources don't imply that Augustus was defensive at all; Properti...
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