Refer to the Table Below

Multiple Choice

Refer to the table below. The table shows data collected from studies comparing normal and mutant cells.Mutant cells differ from normal cells in having a mutation in the gene encoding a receptor protein.The mutation results in a single amino acid change from a glutamic acid to a lysine.Which is a possible effect of the mutation?

A) The receptor protein cannot activate intracellular signal transduction.
B) The receptor protein loses its ability to embed in the cell membrane.
C) The receptor protein is not synthesized in mutant cells.
D) The receptor protein binds the signal molecule with lower affinity.
E) The receptor protein no longer recognizes the signal molecule.