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IB Biology HL B1.2.10 Hl Effect of Polar Non Polar Amino Acids Questions

Explore how amino-acid polarity places hydrophilic residues toward water and hydrophobic residues inside soluble globular proteins in IB Biology HL B1.2.10.

Syllabus
First assessment 2025
Course
Biology HL
Level
HL

Exam points

  • Distinguish polar hydrophilic from non-polar hydrophobic amino-acid R-groups in protein surfaces and cores.
  • Explain why polar residues are commonly exposed to water while hydrophobic residues are buried in soluble globular proteins.

IB Biology HL B1.2.10 Hl Effect of Polar Non Polar Amino Acids Questions 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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