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Organisms Respond to changes in their environments Condensed Notes £3.99   Add to cart
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  7. Unit 6 - Organisms respond to changes in their internal and external environments

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Organisms Respond to changes in their environments Condensed Notes
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The following document contains my structured and easy to read condensed notes filled with great diagrams for all of Biology AQA A level. The boxes for every chapter contain all the concepts you need to know for each chapter with the notes are followed below. Notes are bite sized and will help with...

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  • July 7, 2023
  • 10
  • 2021/2022
  • Lecture notes
  • Jeremy sampson & sarah brockwell
  • All classes

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Organisms Respond to changes in their
environments
● Response to Stimuli
○ Plant growth factors
■ Tropisms
○ Control of heart rate
■ Pressure/chemoreceptors
○ Receptors
■ Pacinian corpuscles
■ Eye: rods/cones
○ Nervous organisation
■ Reflex arc
● Nervous coordination and muscles
○ Synapses
■ Synaptic transmission
○ Nerve impulse
■ Resting potential
■ Action potential
■ Speed of nerve impulse
○ Structure of muscle
■ Muscle contraction
■ slow/fast twitch
● Homeostasis
○ Principles
○ Feedback mechanisms
○ Hormones and regulation
○ Hormones in osmoregulation
○ Control of blood water potential
○ Structure and role of nephron


● Response to stimuli
● Responding to their environment helps organisms survive
● The nervous system

, ○ Reflex arc




■ Stimulus → Receptors → Central Nervous System → Effectors →
Response

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