Top answers

Explain why an enzyme catalyses only one reaction.

Enzymes only have one active site which is only complementary to one specific substrate.
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Answered by Luckksha L. • Biology tutor
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Define the term ‘derived demand’

The demand for a good or service reulting from or leads to the demand for another good or service.
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4699 Views

What is the best way to revise for Transport Economics?

Past material. This is by far the most effective way to earn the most marks in the exam. Utilising past papers, markschemes and examiner reports are essential in securing your A-Level success.
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Answered by Charles P. • Economics tutor
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How can I improve my essay terminology?

Varying your essay terminology is one of the simplest ways of upgrading yours essays from GCSE to an A grade A-level standard. Eloquent phrases for introducing new points, comparison or for linking ideas can...
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Answered by Amelia A. • Spanish tutor
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When do I use the subjunctive?!

Think WEIRDO! These are the situations that trigger the subjunctive: W ishes, desires, orders Querer, decir, preferir, desear, gusta, esperar E motions Estar enfadado que, Me alegro mucho de que… I mpersonal...
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Answered by Amelia A. • Spanish tutor
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