Task: Class Definition Understanding (ontology: Sciences/Biology)

Which of the following definitions best describes 'fatty acid transport'?

A. The directed movement of biotin into, out of or within a cell, or between cells, by means of some agent such as a transporter or pore. Biotin is cis-tetrahydro-2-oxothieno(3,4-d)imidazoline-4-valeric acid; the (+) enantiomer is very widely distributed in cells and serves as a carrier in a number of enzymatic beta-carboxylation reactions.
B. The directed movement of fatty acids into, out of or within a cell, or between cells, by means of some agent such as a transporter or pore. Fatty acids are aliphatic monocarboxylic acids liberated from naturally occurring fats and oils by hydrolysis.
C. The directed movement of pyruvate into, out of or within a cell, or between cells, by means of some agent such as a transporter or pore.
D. The directed movement of a long-chain fatty acid into, out of or within a cell, or between cells, by means of some agent such as a transporter or pore. A long-chain fatty acid has an aliphatic tail containing 13 to 22 carbons.

Answer: The directed movement of fatty acids into, out of or within a cell, or between cells, by means of some agent such as a transporter or pore. Fatty acids are aliphatic monocarboxylic acids liberated from naturally occurring fats and oils by hydrolysis.