Question

question 1 of 15
the following figure shows a typical phospholipid. suppose this molecule was incorporated into a cell membrane. which letter indicates the portion of the molecule that would be exposed to the aqueous environment?

Explanation:

Phospholipids in cell - membranes have a hydrophilic (water - loving) head and hydrophobic (water - fearing) tails. The head region, which contains charged and polar groups, is exposed to the aqueous environment. Region A shows the polar head group of the phospholipid with a charged nitrogen and phosphate groups, making it hydrophilic. The tail regions (B, C) are long hydrocarbon chains which are non - polar and hydrophobic and are buried in the interior of the membrane away from water.

Answer:

B. A