Which of the following are localized in the lipid bilayer?
A primary function of cholesterol in the plasma membranes of some animals is to
According to the fluid mosaic model of cell membranes, which of the following is a true statement about membrane phospholipids?
An integral membrane protein would have to be
How do unsaturated fatty acids help keep any membrane more fluid at a lower temperature?
Which of the following statements about diffusion is correct?
Celery stalks that are emerged in freshwater for several hours become stiff. Celery stalks left in a 0.15 M salt solution become limp. From that, we can deduce that
Mammalian blood contains the equivalent of .15 M NaCl. Seawater contains the equivalent of .45 M NaCl. What will happen if red blood cells are transferred to seawater?
Water passes quickly through cell membranes because
Submerging a red blood cell in distilled water will result in
Which of the following factors would tend to increase membrane fluidity?