revision material

This is the information that we gave out in class today - people that were in Cambridge (or people that forgot their sheets in clss) should use this to make sure you're revising the right topics.

For each section make sure you know/understand the following:

Feel free to email with any questions/problems – tco@cheney.oxon.sch.uk

Adaptation and survival:

·         Common adaptations in plants and animals

·         explain WHY adaptations help them

·         what adaptations allow organisms to do

·         what can happen if a population can’t adapt to an environment.

Energy in biomass:

·         How to draw and understand a biomass pyramid.

·         Explain how and why energy decreases as you move up through a food chain.

·         How decay happens, and factors which affect it.

Variation, reproduction and new technology:

·         Explain why offspring look similar to their parents using KEYWORDS from the other page.

·         Understand asexual and sexual reproduction.

·         Factors that contribute to making organisms look the way they do (not ALL genetic).

·         Genetic engineering

·         Cloning

·         Understand the issues surrounding G.M. and cloning (golden rice, animal farm documentary etc.)

Evolution:

·         Who Darwin and Lamarck (slightly less important) were and what their theories were.

·         What natural selection is, as well as an example of it occurring.

·         How similarities and differences help with classification.

Progress test revision

The topics you will be tested on are -

• Adaptation and survival (how plants and animals are adapted to their environments, competition)
• Energy in biomass - (energy in food chains, decay, the carbon cycle)
• Variation, reproduction and new technology ( inheritance, types of reproduction, cloning, ethical issues)
• Evolution (Theories of evolution, natural selection, classification)

The bitesize website has some good notes to get you started - http://www.bbc.co.uk/schools/gcsebitesize/science/aqa/
Go through these (the last four points in the Biology section) and try the tests at the end, they will help you identify what you need to work on the most. Once you've identified areas to work on, you can also use older posts on this website to help you with certain topics. 
Make sure you fill in the keypoints sheet, and keep it with you to use at home for revision.

Homework - Natural Selection

Before Easter there were some classes with lots of people missing for various reasons. While this is fine, you all need to know who Charles Darwin was and how he formulated the theory of evolution. 

Watch this documentary at home - it gives you a really clear picture of how Darwin developed his theories (there are four parts to this, if you double click on the video it will open in youtube and give you the other sections).