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CIE AS Biology (9700) 2019-2021 Revision Notes

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2. Biological Molecules

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The primary structure of a protein. The three-letter abbreviations indicate the specific

amino acid (there are 20 commonly found in cells of living organisms)

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CIE AS Biology (9700) 2019-2021 Revision Notes

savemyexams.co.uk

2. Biological Molecules

YOUR NOTES

⬇

© 2015-2021 Save My Exams Ltd

CIE AS Biology (9700) 2019-2021 Resources

REVISION NOTES 

 

  TOPIC QUESTIONS 

 

  PAST PAPERS

Page 49

Secondary

The secondary structure of a protein occurs when the weak negatively charged nitrogen

and oxygen atoms interact with the weak positively charged hydrogen atoms to form

hydrogen bonds

There are two shapes that can form within proteins due to the hydrogen bonds: