E Michaelmas Biology trial 2015 – revision checklist

I suggest you go through this checklist and make sure you understand each point fully….. This list could be the basis for making some revision notes.

  • Understand the differences between atoms and molecules
  • What is a polymer?  Give some biological examples of polymers and describe their structure.
  • What are the chemical tests for glucose and starch?
  • How do enzymes work as catalysts?
  • Draw a graph to show how temperature effects the rate of an enzyme-catalysed reaction.  Annotate the graph to explain why this pattern is observed.
  • Now do the same but for the effect of pH on enzyme reactions…..
  • Write down the word and balanced chemical equations for photosynthesis.
  • Why is photosynthesis such an important process in the plant (and in the ecosystem)?
  • Draw an annotated diagram to show the structure of a leaf and how it is adapted for photosynthesis.
  • How do you test a leaf for starch?  How do you measure rates of photosynthesis using Cabomba? What variables could you alter in this set up?
  • Explain differences in function between xylem and phloem.
  • How is water absorbed in root hair cells?  Explain osmosis (good luck!)
  • What are the differences between diffusion and active transport?  Give two biological examples of each.
  • What is transpiration?  How can you measure it?
  • What factors affect rates of transpiration in a plant?
  • What is the difference between a pesticide and a fertiliser?
  • What are the advantages and disadvantages of chemical pesticides and biological control of pests?
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2 comments

  1. lara

    Hello sir. This place is, I believe, the only place where I’ll get an answer to this question :
    I don’t understand how graphs work. I can draw them,interpret them and everything but they’re just ‘sometjing’ to do.
    One more thing, HOW IN THE WORLD is it possible to draw graphs whose values are like 8.63 4.56 2.44 and 3.44 and as such on the y axis??? ( that was on a past paper) I would be grateful if you answer those questions and explain the difference between precision and accuracy and how they can be improved. Sorry to diturb you. I know that life has more to offer than answer hopeless students. That’s what my biology teacher told me you’re good at theory but the highest you can get is a c cuz you lack graph and practical skills that are supposed to be understood ” even though we don’t even have a lab and I just do self study cuz he doesn’t explain at all. Sorry again for the long post.. do have fun to make up for this if you answer it

    • Paul Gillam

      I hope the new post answers some of your questions. It is not possible to accurately plot points with two decimal places on a normal graph (unless you have a very big piece of paper!) So in the question you mention, you just choose as big a scale as you can and plot it as best you can…. I don’t believe your teacher by the way. There is no difference between theory and graph/practical skills. Both are science and if you are a good scientist (and i bet you are) you can understand both to a high level. Are you doing iGCSE Biology? If so, get hold of some past papers and mark schemes and look at the questions on experiments. You will soon work out how to answer these types of questions. Good luck!

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