Which of the following cell types would not have tight junctions, desmosomes, or connexons?
a. Phagocytes
b. Epithelial cells
c. Muscle cells
d. Red blood cells
Which element of the plasma membrane contributes to its hydrophobic characteristics?
a. Polar heads of phospholipid molecules
b. Nonpolar tails of phospholipid molecules
c. Floating proteins
d. Cholesterol
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