Cell Membrane Permeability Quiz

Which of the following molecules can pass through the cell membrane via simple diffusion?

• Glucose

• Oxygen

• Calcium ions

• Proteins

What characteristic of water allows it to pass through the hydrophobic region of the cell membrane?

• Its non-polar nature

• Its small size

• Its large size

• Its high charge

How do phospholipids behave when placed in water?

• They dissolve completely

• They align their tails away from water

• They form a single layer

• They become charged

In the analogy used, what does holding a football represent?

• Being small in size

• Being charged

• Being hydrophobic

• Being non-polar

Why is it difficult for larger molecules to pass through the cell membrane?

• They are too small

• They are non-polar

• They lack charge

• They are too large to fit through the membrane