Question

the fluidity of the cell membrane is highly regulated such that some regions of membrane in a cell have very low fluidity while other regions of the same cell have higher fluidity. creating low fluidity regions is helpful to the cell because it helps to cluster together groups of proteins whose functions depend on one another. an example of this is the group of proteins that transmit signals from one brain cell to another. some genetic disorders prevent the formation of low fluidity regions within cell membranes. what effect(s) do you predict these disorders will have on brain cells? the transmission of signals between brain cells will be less efficient. the brain cell membranes will be \leaky\ and let molecules in or out of the cell that cannot usually cross the membrane. the effects will be very small because proteins are usually stationary within the membrane, regardless of the fluidity. overall fluidity of the brain cell membranes will no longer decrease when temperature is decreased.

Explanation:

Low - fluidity regions help cluster proteins for signal transmission between brain cells. Genetic disorders preventing their formation would disrupt this clustering, thus reducing signal - transmission efficiency. There is no indication in the text that the membrane would become leaky, that proteins are stationary regardless of fluidity, or that temperature - related fluidity changes would be affected.

Answer:

The transmission of signals between brain cells will be less efficient.