Notes

Question 1

The Goigi apparatus is part B, and tilis has been excluded by the question. 1/2    

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Summary Biodiversity and conservation

3 There are moral and ethical reasons for maintaining biodiversity, and also more practical ones. For example, we may be able to use plants to provide medicines, and animals to provide alleles to use in animal breeding. 4 Species may become in danger of extinction...

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Summary of Inherited change

2 Diploid organisms contain two copies of each gene in each of their cells. In sexual reproduction, gametes are formed containing one copy of each gene. Each off spring receives two copies of each gene, one from each of its parents. 3 The cells produced by meiosis are...

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Summary of Homeostasis and Co-ordination

3 Homeostatic equilibrium requires receptors that detect changes in physiological parameters such as the temperature, water potential and pH of the blood. Effectors are the cells, tissues and organs that carry out the functions necessary to restore those parameters to...

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