Phospholipids consist of a polar, hydrophilic, phosphate-bearing head and two nonpolar hydrophobic, fatty-acid tails, and they are aligned in a lipid bilayer in membranes. While phospholipids may play a role in transporting molecules within a cell, they are not typically considered to be carrier molecules.

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Phospholipids

Question 20

Multiple Choice

Phospholipids

A) consist of a polar, hydrophilic, phosphate-bearing, head and two nonpolar hydrophobic, fatty-acid tails.
B) are aligned in a lipid bilayer in membranes.
C) serve as carrier molecules.
D) only (a) and (b) above.
E) all of these answers.

Correct Answer: