Cell Membranes

What is the primary function of the cell membrane?

Which of the following molecules is the main structural component of the cell membrane?

In the fluid mosaic model, which component is responsible for the fluidity of the membrane?

Which of the following is NOT a function of membrane proteins?

What type of transport requires energy to move substances against their concentration gradient across the cell membrane?

Which of the following best describes the role of glycoproteins in the cell membrane?

How does the presence of unsaturated fatty acid tails in phospholipids affect membrane fluidity?

In an experiment, a red blood cell is placed in a hypotonic solution. What will happen to the cell?

Which of the following best explains why the cell membrane is described as 'selectively permeable'?

Calculate the net movement of molecules if the concentration inside the cell is 5 mM and outside is 20 mM, assuming simple diffusion across the membrane.