Attack of the Sap Suckers ! Synoptic Comprehension - A level Biology

Try this, a terrific exercise to link Photosynthesis and Respiration. Excellent end of term revision.

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Seems to be a huge challenge for some students

Try using this animation and this one and an excellent set of interviews

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Be warned these are not straightforward

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I have made a series of 9 short (5-7 mins)  video tutorials to try to help students understand glycolysis, link reaction, krebs cycle, anaerobic respiration, oxidative phosphorylation, chemiosmosis and the use of other respiratory substrates.   I hope you find them of use.

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Another from the past.

Terrific question about DNA, diffusion, ATP production and fireflies going out in a blaze of glory....

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From 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.

The 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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Most students revise by copying out textbooks that they didn't understand when they were taught the concepts. There are better ways of learning and revising.

Here is one way of revising Biological Molecules,  print these on card then cut out and go through with a friend - then try making your own.

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When I teach plant reproduction in the spring I give every student a broad bean. We discuss seed shape and function and  the conditions that might be needed for germination.

Enzymes have an active site - Substrates don't.

The substrate is a complementary shape to the active site NOT the "same shape"

Enzymes reduce the activation energy for a reaction to occur

Anabolism is making, Catabolism is breaking

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The only prior  A-level knowledge you need to answer the question is that lactate is produced when ATP is made from anaerobic respiration.

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Teaching aerobic respiration is a difficult topic, traditionally,  teachers begin with glycolysis, then link reaction and krebs cycle and then the electron transport chain, I would argue that there is a better way to teach this.

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