Membrane Practice Questions Flashcards
Which of the following best describes the plasma membrane?
o A) A rigid boundary between a cell and its surroundings
B) A semi-permeable barrier involved in regulating the movement of substances in and out of the cell
C) An impermeable layer that prevents all movement of substances
o D) A solid structure composed mainly of carbohydrates
B) A semi-permeable barrier involved in regulating the movement of substances in and out of the cell
What model is commonly used to describe the structure of the plasma
membrane?
A) Fluid mosaic model
B) Solid matrix model
C) Lipid bilayer model
D) Fixed protein model
A) Fluid mosaic model
Which term describes a molecule with both hydrophilic and hydrophobic
regions?
A) Amphipathic
o B) Hydrophilic
o C) Hydrophobic
o D) Lipophilic
A) Amphipathic
