Which of the following choices is not a basic feature of cellular communication?

A fundamental concept in cellular communication is that signals are produced by various types of cells, which can include prokaryotes, eukaryotes, and even multicellular organisms. The initiation of communication relies on the ability to generate a signal, which can be of different types (like chemical, electrical, etc.), and is not limited solely to eukaryotic cells.

In cellular communication, it is essential that the signal is transported to the target cell, which is a key feature of the process. This transport can occur through various methods, such as diffusion or active transport, depending on the nature of the signal and the distance it needs to travel.

Furthermore, once the signal reaches the target cell, there must be a mechanism for the target to recognize and respond to that signal. This response can initiate a cascade of cellular processes and changes that are vital for proper functioning.

Therefore, the statement that the signal can only be produced by a eukaryote is inaccurate, making it the choice that does not align with the fundamental characteristics of cellular communication.