Biology A-Level
Tertiary and quaternary structure
What Tertiary and quaternary structure means in Biology A-Level, as defined for OCR.
Definition of Tertiary and quaternary structure
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Reference: OCR
The precise three-dimensional shape comes from the primary sequence and is held by hydrogen bonds, ionic bonds, disulfide bridges and hydrophobic interactions; haemoglobin has four polypeptide chains.
Topics that use Tertiary and quaternary structure
- Biological molecules (OCR A-Level)
Related terms
- amylose and amylopectin
- Benedict's test for reducing and non-reducing sugars
- Biuret test for proteins
- Bonding and R-group interactions
- Carbon, hydrogen and oxygen
- Cellulose and microfibrils
- Cholesterol
- Cohesion and surface tension
Using Tertiary and quaternary structure in the exam
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