Which of the Following Describes Cell Communication Systems

question 9

Multiple Choice

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.

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