Which of the following is NOT correct regarding the molecule whose structural formula is shown below?
A) It is an amphiphilic molecule.
B) It is a sterol.
C) It makes the membrane less permeable to small hydrophilic molecules.
D) It is found in membranes of virtually all living cells.
E) It affects the fluidity of the lipid bilayer.

Question

Which of the following is NOT correct regarding the molecule whose structural formula is shown below? 
A) It is an amphiphilic molecule. 
B) It is a sterol. 
C) It makes the membrane less permeable to small hydrophilic molecules. 
D) It is found in membranes of virtually all living cells. 
E) It affects the fluidity of the lipid bilayer.

Quizplus · Accepted Answer

The structure shown is that of cholesterol, an amphiphilic sterol that affects the permeability and fluidity of the membranes in eukaryotic cells. Most prokaryotic membranes lack cholesterol.

Which of the Following Is NOT Correct Regarding the Molecule