Which of the following does not describe the signal molecule in this model? Once the signal is released, the gate is permanently closed.
It has specific receptors that match the ion surface.
O It only allows passage of specific ions.
Responsibilities include initiating the cellular response.

answer: the answer is b

the answer is false?

unicellular organisms, like bacteria, are able to perform all life functions within one single cell. multicellular organisms need many different types of cells to carry out the same life processes. each of these special types of cells has a different structure that it perform a specific function.