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IB Biology HL B2.1.4 Integral and Peripheral Proteins Questions

Practise locating membrane proteins in labelled diagrams, then link their positions at a membrane surface or within the bilayer to their roles.

Syllabus
First assessment 2025
Course
Biology HL
Level
HL

Exam points

  • Distinguish integral proteins embedded in one or both bilayer layers from peripheral proteins attached to a surface.
  • Match membrane proteins to functions: channels, pumps, receptors, enzymes, adhesion or cell recognition.
  • Draw a membrane diagram placing integral, peripheral and glycoprotein components relative to the bilayer.

IB Biology HL B2.1.4 Integral and Peripheral Proteins Questions question 1

[Maximum number: 4]

Oxygen is needed to complete aerobic cell respiration.

Outline four different functions of membrane proteins.

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