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iGCSE Biology Section 2 lesson 7

iGCSE Biology Section 2 lesson 7. Content. Section 2 Structures and functions in living organisms. a) Levels of organisation b) Cell structure c) Biological molecules d) Movement of substances into and out of cells e) Nutrition f) Respiration g) Gas exchange h) Transport

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A neurone

The nervous system enables humans to react to their surroundings and coordinate their behaviour Cells called receptors detect stimuli (changes in the environment). Receptors and the stimuli they detect include:. The brain coordinates the response. A neurone.

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B3 90 questions

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