All of the Following are True About a Partition Coefficient

Question

All of the following are true about a partition coefficient except
A)it is the ratio of solubility in an organic solvent to solubility in water.
B)it can be used to predict the probability that an amino acid is part of a transmembrane region of a protein.
C)it is high for a molecule that readily crosses membranes by simple diffusion.
D)it is the concentration at which the rate of transport is half maximal.
E)it depends on the polarity of the molecule.

Accepted Answer

The partition coefficient is a measure of how well a substance partitions between two solvents, typically an organic solvent and water, and is not directly related to the concentration at which the rate of transport is half maximal. This description more accurately refers to the concept of a Michaelis constant (Km) in enzyme kinetics, not a partition coefficient.