IB Biology HL B2.1.2 Bilayers as Barriers Question Bank
Practise IB Biology HL B2.1.2 through questions that evaluate why water and glucose cross membranes differently.
- Syllabus
- First assessment 2025
- Course
- Biology HL
- Level
- HL
Exam points
- Evaluate why water and glucose cross membrane barriers differently using polarity and transport evidence.
- Use axon and intestinal-epithelium examples to explain bilayer barrier functions.
B2.1.2—Bilayers as barriers question 1
[Maximum number: 1]
Neural pathways in living brains can now be mapped by tracking the movement of water molecules inside axons. What keeps water molecules inside axons?
A
Plasma membrane
B
Hydrogen bonding
C
Pump proteins
D
Synapse
A
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