Complete Lesson

A: Communication & Homeostasis

Communication & Homeostasis

A Low Priority 5 lessons

Lessons

Second Messengers (cAMP)

Hormones, cAMP, Anaerobic Respiration

A LEVEL - PAPER 1 2015 - QUESTION 20

Classic questions on fight or flight and anaerobic respiration.

Walkthrough

Positive & Negative Feedback

Thermoregulation, Positive Feedback, Action Potentials, Scatter Diagram

A LEVEL - PAPER 3 2019 - QUESTION 2

Some challenging application questions here on a variety of topics. Remember to look at the number of marks available - e.g. for ai) - 2 marks - don't waste too much time here - 2 sentences is plenty. A good example of merging different areas of the spec in the same question.

Walkthrough

Control of Body Temperature

Thermoregulation, Positive Feedback, Action Potentials, Scatter Diagram

A LEVEL - PAPER 3 2019 - QUESTION 2

Some challenging application questions here on a variety of topics. Remember to look at the number of marks available - e.g. for ai) - 2 marks - don't waste too much time here - 2 sentences is plenty. A good example of merging different areas of the spec in the same question.

Walkthrough

Endotherms & Ectotherms

Homeostasis, Mass Transport (Animals)

A LEVEL - PAPER 1 2017 - QUESTION 16

The mark scheme covers a lot of useful points that could reappear in your exam (but make sure you attempt the questions first before using the mark scheme to tidy up your notes)

Walkthrough

Controlling Heart Rate

Histology, Control of Heart Rate, Reflexes

A LEVEL - PAPER 1 2018 - QUESTION 23

Check out the other histology questions and you will soon learn how to identify the different tissue types from photomicrographs.

Walkthrough

Topic Revision

Recording from previous live classes on this topic:

  •   Second Messengers (cAMP)    PDF 
  •   Control of Heart Rate    PDF 

All Topic Questions

Q & A

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