Which of the following describes cell communication systems?
A)
Cell signaling evolved more recently than systems such as the immune system of vertebrates.
B)Communicating cells are usually close together.
C)Most signal receptors are bound to the outer membrane of the nuclear envelope.
D)Lipid phosphorylation is a major mechanism of signal transduction.
E)In response to a signal, the cell may alter activities by changes in cytosol activity or in transcription of RNA.

Question

Quizplus · Accepted Answer

Cell signaling can result in a variety of responses, including changes in cytosol activity or gene expression. This is often accomplished through changes in transcription of RNA.

Answer: B
 In many cases, cell communication occurs between cells that are in close proximity to each other. This allows for rapid signaling and response times.

Answers A, C, and D are incorrect:
A) There is no evidence to suggest that cell signaling evolved more recently than other biological systems.
C) Most signal receptors are bound to the plasma membrane, not the outer membrane of the nuclear envelope.
D) While lipid phosphorylation is involved in some signaling pathways, it is not a major mechanism of signal transduction.

Which of the Following Describes Cell Communication Systems