welcome to a2 biology 101

about the site

This site contains revision notes for the A2 OCR Biology course. Browse the site to find various revision notes for each of the units.

Module 1 (F214) – Communication, Homeostasis and Energy
Unit 1: Communication and homeostasis
Unit 2: Excretion
Unit 3: Photosynthesis
Unit 4: Respiration

Module 2 (F215) – Control, Genomes and Environment
Unit 5: Cellular control and variation
Unit 6: Biotechnology and gene technologies
Unit 7: Ecosystems and sustainability
Unit 8:
Responding to the environment

download these notes

All of these revision notes which you see on the site are also available to download as PDF documents, so that you can revise with A2 Biology 101 away from the site. To download the notes as PDF files to your computer, visit the Downloads page using the link at the top of the site. Download links are also provided for each individual chapter, dotted around the site


I always want to hear your comments and suggestions, so please if you have any, or any requests for revision material, please leave them on the site and I’ll get back to you. alternatively, email me directly at michael.owen346@googlemail.com

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10 Responses to “welcome to a2 biology 101”

  1. 1 Nikki
    January 17, 2011 at 11:09 pm

    Could do better but good effort.

  2. 2 Guesswho
    January 23, 2011 at 11:37 am

    You are the superman of biology. I think I’m in love with you. Can you come over and be my personal biology tutor? XXXXXXX

  3. 3 Varsh
    January 23, 2011 at 11:49 am

    In all seriousness this website is actually amazing, wish I’d seen it earlier. Awesome Dan really awesome.

  4. 4 Sandra
    June 7, 2012 at 11:30 am


    Great notes but I couldn’t find anything on homeobox genes which would be greatly appreiciated.



  5. 5 Varsh0503
    June 12, 2012 at 8:36 am

    No worries,found it! :D
    They’re amazing btw1 ;)

  6. 6 Me!
    November 14, 2012 at 3:12 pm

    Thank you so much!! This makes biology mean so much more sense!!

  7. 7 Hassan
    January 8, 2013 at 12:05 am

    Amazing stuff. Really good consolidation of all the content. Good for revision and well presented.

  8. 8 Saif
    January 19, 2013 at 4:08 pm

    How do I download these notes?????

  9. 9 Sarah
    September 7, 2013 at 4:41 pm

    I can’t find all the unit notes. Is there any?

  10. 10 Megan
    October 16, 2014 at 11:56 am

    Is it just me, or can anyone else only download the communication and homeostasis notes? I can’t see any links for anything!

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Browse the site and read the various units of the course
This is OCR Biology and only contains notes for that syllabus
Feedback is appreciated, feel free to check out the other sites in the series


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