Some concepts turn up again and again in A-level biology. Taking a little time to ensure you really understand these key concepts from the start can save a lot of effort overall.
Surface area to volume ratio (SA:V) is vital for understanding a wide range of topics including transport across cell membranes, gas exchange, digestion, heat exchange, and mass transport. SA:V explains why the inner membrane of a mitochondrion is folded, why elephants have big ears, and why jellyfish don’t need blood vessels.
Read moreA variable is any value that does/might change during an experiment. Variables can include things like pH, temperature, colour, or the concentration of substances. The amount of time that has passed is a variable, as are rates of reaction.
Read moreOCR A June 2019 summer highlights
Read moreA great glossary of vocabulary that applies to Biology questions and answers.
Read morePre-U synoptic exam question - Xylem and transpiration. Transport of Water in Plants
Read moreOutstanding synoptic question on muscles and contraction. Excellent practise
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Read moreGood 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 specifications
Read moreThis is an outstanding synoptic question from a Pre-U Biology Paper. Covers Protein Synthesis, Enzymes, Heart Disease, Respiration ....
Read morePhotosynthesis, Enzymes, Pigments, Leaf Buoyancy and more experimental design.
Think about how starch is made and what it is made from ......
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Read moreOne from the OCR Unifying concepts paper, combines respiration and photosynthesis.
(a) think photolysis and Oxygen accepting electrons ...
(b) is about phosphorylation and diffusion gradients
(c) is about the nature of passive transport and using proteins
(d) is about endosymbionts and prokaryotes
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Read moreFrom an Old OCR Unifying concepts paper. ....
Don't panic, the question is not about DNA vaccines or plasmids.
The question is about differences between protein and DNA structure, protein synthesis, post translational modification of protein, clonal selection, mutation of pathogens. All of which are on the specification.
Read moreThe OCR spec is now partly examined through some terrific multiple choice questions. This is a assessment format that is unusual to many students. Here are 9 questions from an Old paper that will stimulate some thought.
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Read moreDont panic, the question is not about the Cuckoopint flowers that you have never heard of, its about aerobic respiration, mitochondria, oxygen consumption - all of which are topics that you are familiar with.
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