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IB Biology HL B1.2.10 Polar and Non-Polar Amino Acids Question Bank

Practise IB Biology HL B1.2.10 by connecting polar and non-polar R groups with protein folding, membrane position and myoglobin structure.

Syllabus
First assessment 2025
Course
Biology HL
Level
HL

Exam points

  • Interpret polar and non-polar R groups at protein surfaces, membrane cores and hydrophilic channels.
  • Use myoglobin evidence to connect R-group chemistry with globular protein folding.

B1.2.10 (HL)—Effect of polar/non-polar amino acids question 1

[Maximum number: 1]

Myoglobin is a globular protein in which nearly all the non-polar R-groups point towards the inside of the molecule. The outside surface contains all the polar R-groups. What can be deduced from this?

A

Disulfide bonds occur on the inside.

B

Hydrogen bonds form with water on the outside.

C

Ionic bonds form with water on the outside.

D

Covalent bonds occur on the inside.

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