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Key tips
Look at the essay titles at the start of the examination try to make a decision which one interests you. This means it is not a shock when you get there, but
most importantly, you can begin to think about it as you move through the paper, the paper is synoptic you may find ideas of aspects of the course being
assessed that can be used in the essay, you may even find useful material in the questions.…read more

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General Principles for marking the Essay:
Scientific Content (maximum 16 marks)
Category Mark Descriptor
Most of the material reflects a comprehensive
understanding of the principles involved and a knowledge
of factual detail fully in keeping with a programme of Alevel
Good 14 study. Some material, however, may be a little superficial.
Material is accurate and free from fundamental errors but
there may be minor errors which detract from the overall
accuracy.…read more

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A balanced account making reference to most areas that might realistically be covered on
an Alevel course of study.
2 A number of aspects covered but a lack of balance. Some topics essential to an
understanding at this level not covered.
1 Unbalanced account with all or almost all material based on a single aspect.
0 Material entirely irrelevant or too limited in quantity to judge.
Relevance (maximum 3 marks)
M Descriptor
3 All material presented is clearly relevant to the title.…read more

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Material entirely irrelevant or too limited in quantity to judge.…read more

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Gene technology and its applications
Expect descriptions and discussion within all or most of the following areas.…read more

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These are inheritable and unique to an individual as it depends which combinations they inherit. Process described briefly, extraction,
digestion, separation (gel electrophoresis and then in alkali), hybridisation with probe.
Examples of pharmaceutical products from microorganisms e.g., human insulin
Use of genetically modified plants e.g.…read more

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