Monthly Archives: October 2013

Chemicals of life

Can you distinguish between organic and inorganic compounds? Can you identify carbohydrates, lipids and proteins from diagrams? Can you explain the role of condensation and hydrolysis reactions between amino acids and polypeptides, between mono, di and polysaccharides, and between fatty acids, glycerol and triglycerides? Can you compare the use of carbohydrates and lipids … Continue reading

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Chemical elements and water

Here is the syllabus outline for Topic 3, and also Topics 7 and 8 since they are extensions of Topic 3.  Topic 3,7,8 – syllabus outline The first section has to do with chemical elements and water. What are the most frequently occurring … Continue reading

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Nervous system

Some of the questions we’ll be tackling in the next section of the syllabus (6.5) are: Do you know what the CNS and PNS are? Can you explain what role receptors, sensory neurons, relay neurons,motor neurons and effectors play in conducting nerve impulses? Can you draw and label a diagram of a … Continue reading

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Mitosis

Here are  some of the questions we’ll be answering in this section: What is the cell cycle? What happens in each of the four stages of mitosis? Why can’t eukaryotes just divide by binary fission like prokaryotes do? What does mitosis have … Continue reading

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Why don’t we get sick more often?

Our bodies remain healthy despite coming into contact with germs and microbes many times a day.  This is due to the fact that we have a pretty efficient defence system that protects us from disease.  See here for a presentation on this … Continue reading

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