Monthly Archives: March 2014

Neurotransmitters and synapses

Here are the big questions for us to tackle in this section: How does decision-making occur in the CNS? How do psychoactive drugs affect the brain and personality? What the physiological effects of THC and cocaine? What are the causes … Continue reading

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Exam preparation

I came across these videos which I think will be VERY useful for you in the final weeks before your IB exams.  

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Evolution

Evolution is the cumulative change in the heritable characteristics of a population. This is a key unit in Biology.  We will explore the evidence for evolution provided by the fossil record, selective breeding of domesticated animals and homologous structures.  We will understand that populations … Continue reading

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Classification

There are millions of species of our planet.  In order to make some sense of this huge variety, we classify organisms in a very specific way.  To learn more we’ll use this presentation from Mr Taylor.  Classification And this one from … Continue reading

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Populations

We are going to learn about populations and what affects them.  In particular: How is population size affected by natality, mortality, immigration and emigration? What does a typical population growth curve look like? What are the reasons for the exponential, … Continue reading

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The greenhouse effect

We all know a little about this important topic.  For our syllabus we must be able to answer the following questions: What is the carbon cycle?  What are the main processes involved in it and how are they connected? What … Continue reading

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