Unit 6 Organisms respond to changes in their internal and external environments

These notes are presented in an easy-to-use Q&A format. Colour coding, diagrams and a simple layout makes learning easy. After each sub-topic, you’ll find a list of common mistakes that will help you beat those specific mark schemes.

Detailed notes on Topic 6, specifically stimuli and response for aqa alevel biology 25/26

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This PDF document includes 1. summary on Nervous Coordination topic relevant to the AQA A Level Biology Specification - it covers action potentials, nerve impulse transmission and synaptic transmission - notes written by reviewing key phrases of mark schemes from past papers 2. practice exam questions along with their mark scheme