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CIE AS Biology (9700) 2019-2021 Revision Notes

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2. Biological Molecules

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Page 51

The tertiary structure of a protein with hydrogen bonds, ionic bonds, disulphide bonds

and hydrophobic interactions formed between the R groups of the amino acids

Quaternary

Occurs in proteins that have more than one polypeptide chain working together as a

functional macromolecule, for example, haemoglobin

Each polypeptide chain in the quaternary structure is referred to as a subunit of the protein

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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