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How does an enzyme work?

Enzymes are proteins, which are made up of long chains of aminoacids. Proteins have a primary structure (the sequence of aminoacids in the chain), a secondary structure (specific 3D shapes of the chain forme...
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Answered by Cezar B. • Biology tutor
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How do I prepare for my medical school interview?

Congratulations on getting an interview, you're half way there! I know interviews can be overwhelming, but remember many people go through this, and it is okay to be nervous! The main thing to understand is ...
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Evaluate policies which a government in a developed country might pursue to increase the size and productivity of its working population. 15 marks

The government could increase the size of its working population through supply side policies such as spending on education and training. If more people are educated and trained, then there will be a reducti...
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Answered by Jerin A. • Economics tutor
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How does the electron transport chain work?

The electron transport chain is a collection of proteins ( complexes ), of which there are 4 types, whose purpose is to pump protons into the intermembrane space. These protons will be used by the ATP syntha...
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Answered by Cezar B. • Biology tutor
3710 Views

Solve the following simultaneous equations: 2y+x=8 , 1+y=2x

This is a very common type of question that might be asked in an exam and there are 3 methods we could use to solve this; by substitution, by elimination (or subtraction) or by using straight line graphs. Th...
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Answered by Ben R. • Maths tutor
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