Other questions in this quiz

2. what is selective permeability?

  • substances can either enter or leave the cell
  • substances can enter the cell
  • substances can only leave the cell

3. the structure of the plasma membrane?

  • two layers of lipid molecules, the lipid bilayer
  • single layer of lipid molecules, the lipid monolayer

4. the non polar part of the lipid is

  • the fatty acid tail of the lipid - hydrophobic
  • the head of the lipid - hydrophilic

5. what is channel mediated diffusion?

  • phosphate soluble materials dissolve in the membrane phosphates crossing the membrane
  • water soluble materials cross the membrane through channels
  • substances unable to diffuse use specialised carriers
  • lipid soluble materials dissolve in the membrane lipids crossing the membrane

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