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How do I analyse a source in the exam?

The biggest thing to remember about source questions is that its all in the analysis. You don't need that much specific knowledge to answer a source question, and can even get away with j...

AH
Answered by Abigail H. History tutor
2601 Views

Explain the bonding in benzene, and hence its greater stability

Benzene consists of six carbon atoms in a hexagonal ring, all of which are sp^2 hybridised. This allows the perpendicularly oriented 'p' orbital of each carbon to overlap laterally all around the ring. Th...

EP
Answered by Ethan P. Chemistry tutor
2820 Views

Outline the four levels of protein structure.

Primary structure is the number as well as the sequence/order of amino acids in a polypeptideSecondary structures are regularly repeating structures which can either be beta-pleated sheets or alpha-helice...

EP
Answered by Ethan P. Biology tutor
2040 Views

Tom has a circular garden of radius 30m and he wishes to cover it with fertiliser. Boxes of fertiliser cover 28m^2 of garden. How many boxes will Tom need to cover his entire garden?

Area of a Circle = πradius2 Area of Garden = π30*30 = 2827.43 m2Boxes needed = 2827.43/28 = 101

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Answered by Oliver R. Maths tutor
2654 Views

Describe how mark-release-recapture technique could be used to estimate a population of mosquitoes.

Capture mosquitoes by taking a sample from the area of interest for a set period of time, mark the collected insects with a non damaging mark and release then.Then allow time for the marked mosquitoes to ...

AJ
Answered by Anna J. Biology tutor
4802 Views

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