Which Statement Is True About Cells

Multiple Choice

Which statement is true about cells?

A) Different types of cells that perform different functions in the body contain different genes.
B) Differentiation increases the different functions that a cell can perform.
C) All of a cell's genes are always available for transcription.
D) As genes are turned off within a cell, that cell and its daughter cells become more specialized.
E) The proteins that can be produced by a cell are determined at fertilization and do not change over time.