Most signal molecules: A) easily diffuse through the membrane and bind to a receptor in the cytoplasm. B) bind to membrane receptors and transmit information across a membrane without traversing the membrane. C) carry out functions in the nucleus after binding to a receptor in the cell membrane. D) AandC. E) A, B, andC.

The correct answer is option B) "bind to membrane receptors and transmit information across a membrane without traversing the membrane".

Explanation:

Most signal molecules bind to membrane receptors and transmit information across a membrane without traversing the membrane. The signal is then translated in an activity performed by the inner molecules of the receptor cell that detected the signal molecules. This type of signal transduction allow the cells to communicate in a fast and efficient way.