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Describe the difference in molecular structure between and unsaturated fatty acid and saturated fatty acid

Unsaturated fatty acids have double bonds between carbons which means they can accept hydrogen when this bond is broken. Saturated fatty acids lack these double bonds and so the fatty acid molecule is satura...
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Answered by Ella F. • Biology tutor
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Describe, using examples you have studied, ways in which governments seek to control population change (8 marks)

Governments typically introduce population control policies when their country’s population is underpopulated or overpopulated, or has an ageing or youthful population. Underpopulated countries are character...
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Answered by Anna Y. • Geography tutor
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In this question, take 'log' to mean 'log base 5'. Solve the equation log(x^2-5)-log(x) = 2*log(2)

Note that you can not take a positive base log of a negative number. log 5 (x 2 -5) - log 5 (x) = 2log 5 (2) => log 5 ((x 2 -5)/x) = log 5 (4) => (x 2 -5)/x = 4 => x 2 - 4x - 5 = 0 => x = -1 or 5...
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Answered by Milan L. • Maths tutor
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What is the difference between 'J'aimerais de nouvelles chaussures' and 'Jaimerais les nouvelles chaussures' ?

Articles always seem tricky in French, but with practice they are simple! In the first example the indefinite article 'des' is used - this means that the sentence is talking about new shoes in general. In co...
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Answered by Shereen L. • French tutor
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Solve the

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Answered by Milan L. • Maths tutor
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