Cambridge AS & A Level Biology
AA Level subject content
Overview
Topics 12-19: A Level only; examined in Paper 4, with AS content assumed.
In this topic
Lessons
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Classification: species, the taxonomic hierarchy and the three domains
40 min
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The kingdoms of life and their major groups
40 min
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Nervous and endocrine communication
30 min
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Receptors, resting potential and the action potential
35 min
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Striated muscle and the sliding filament model
35 min
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The cholinergic synapse
30 min
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Transmission of nerve impulses along axons
30 min
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Energy in living organisms and ATP
35 min
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Respiratory substrates, RQ and respirometers
45 min
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Control of blood glucose and cell signalling
45 min
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Principles of homeostasis
35 min
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The kidney: urine formation and osmoregulation
50 min
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How meiosis and fertilisation produce genetic variation
30 min
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Meiosis: the reduction division
35 min
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Chloroplast structure and photosynthetic pigments
40 min
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The Calvin cycle and C4 plants
45 min
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The light-dependent stage of photosynthesis
45 min
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DNA microarrays and bioinformatics databases
30 min
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PCR, gel electrophoresis and genetic fingerprinting
45 min
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Recombinant DNA and the tools of genetic engineering
45 min
28 more lessons in this topic. Join to read every lesson, or see what Full access includes.
Sample question
A sample question on this topic. Answer it, check it, then read the worked answer.
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