Some terrific guidance and definitions here - from AQA but applies to all exam boardsRead More
A great glossary of vocabulary that applies to Biology questions and answers.Read More
Exam practise webinars now open for enrolment - join now to save your seatRead More
A pedigree analysis, an epistasis, and a Hardy-Weinberg - useful for OCR Revision
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Brief guide to understanding the hard bits of the immune system A-level Biology Specification. Lots of questions and markschemes on the immune system.
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How to understand and answer Hardy-Weinberg Questions - A-level Biology. Remember to look out for questions where they give you a dominant phenotype frequency -for instance Huntingdons disease, where the frequency of the sufferers is 1 in 100000 - therefore q squared (recessive allele phenotype) is 99999 in 100000.
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How to approach and answer A-level Biology Questions that need you to Analyse Figures, Tables and Images - lots of example past paper questions with the markschemes
DO NOT LOOK at the question and then look at the data to answer the question.
Look closely at the graph or table
look very carefully at the axes - have they plotted mean or rate or time, mass/volume or concentration ?
can you see range bars ?
In a table what range is in the replicates when you compare to the mean ?
what trends can you observe ? then think about what principle of biology is being shown by the the trends.
How would you explain the highest value, the lowest value, the point at which the line crosses the x axis, how would you explain the largest range, how would you change the experiment to reduce the spread in the data ?
Good practice if you are struggling with data analysis questions
Pack of challenging past paper questions with lots of Data Analysis and application - A-level Biology past paper questions - good for OCR and AQA specificationsRead More
Neurones and Action Potentials give an opportunity for examiners to get you to explain a graph (in terms of the flow of Sodium and Potassium ions through voltage gated channel) and to link that explanation to first year concepts of facilitated diffusion and active transport.
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Photosynthesis, Enzymes, Pigments, Leaf Buoyancy and more experimental design.
Think about how starch is made and what it is made from ......
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