Edexcel IGCSE Biology 2.7 Elements in Biological Molecules Topic Practice

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Pearson Edexcel International GCSE Biology

1 The nature and variety of living organisms

(a) Characteristics of living organisms

(b) Variety of living organisms

2 Structure and functions in living organisms

(a) Level of organisation

(b) Cell structure

(c) Biological molecules

2.7 Elements in biological molecules

2.8 Biological molecule structure

2.10 Enzymes as biological catalysts

2.11 Temperature and enzyme function

2.12 Enzyme activity practical

2.13 pH and enzyme function

2.14B Enzyme rate calculations

(d) Movement of substances into and out of cells

(f) Respiration

(g) Gas exchange

(j) Co-ordination and response

3 Reproduction and inheritance

(a) Reproduction

(b) Inheritance

4 Ecology and the environment

(a) The organism in the environment

(b) Feeding relationships

(c) Cycles within ecosystems

(d) Human influences on the environment

5 Use of biological resources

(a) Food production

(b) Selective breeding

(c) Genetic modification (genetic engineering)

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