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MCAT Question A Day - 7/26/14 - Answer!

Free fatty acids do not dissolve in the blood, so they must be transported within the body bound to protein carriers. The most likely explanation for this is:

A.  Blood is an aqueous solution and only hydrophobic compounds are easily dissolved.
B.  Blood is an aqueous solution and only hydrophilic compounds are easily dissolved.
C.  Blood serum contains chylomicrons which do not bind to fatty acids.
D.  Blood serum is lipid based and the polar region of a fatty acid will not be dissolved.

B is correct. This is a knowledge based question. You should know that blood is an aqueous solution.

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