IB Biology HL B1.2.9 Tertiary Protein Structure Question Bank
Practise IB Biology HL B1.2.9 by linking diverse R-group interactions to three-dimensional tertiary protein structure.
- Syllabus
- First assessment 2025
- Course
- Biology HL
- Level
- HL
Exam points
- Interpret tertiary protein structure using R-group hydrogen, ionic, disulfide and hydrophobic interactions.
- Distinguish tertiary structure from primary, secondary and quaternary levels in enzyme and antibody evidence.
B1.2.9 (HL)—Tertiary structure question 1
[Maximum number: 2]
The R-groups of amino acids are very diverse chemically. Interaction between R-groups in different parts of a polypeptide helps to determine the tertiary structure of a protein. List two types of interaction between R-groups.
hydrogen bonds;
ionic bonds;
disulfide bridges/disulfide (covalent) bonds; hydrophobic interactions;
Mark the first two answers only.
Marking guidance:
Do not allow 'interactions' instead of 'bonds'
Do not allow 'bonds' instead of 'interactions'
Do not allow van der Waals forces.
2
max
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