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CIE AS Biology (9700) 2019-2021 Resources



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CIE AS Biology (9700) 2019-2021 CIE AS Biology (9700) 2019-2021 2.1.1 Biological Molecule Tests SaveMyExams

CIE AS Biology (9700) 2019-2021 Resources

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Page 52

The quaternary structure of a protein. This is an example of haemoglobin which contains

four subunits (polypeptide chains) working together to carry oxygen

Summary of bonds in proteins table



CIE AS Biology (9700) 2019-2021 Revision Notes

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2. Biological Molecules

YOUR NOTES

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CIE AS Biology (9700) 2019-2021 Resources

REVISION NOTES 

 

  TOPIC QUESTIONS 



 

  PAST PAPERS

Page 53

Exam Tip


Familiarise yourself with the difference between the four structural levels found in proteins,

noting which bonds are found at which level. Remember that the hydrogen bonds in tertiary

structures are between the R groups whereas in secondary structures the hydrogen bonds

form between the amino and carboxyl groups.





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