Specificity Is an Important Characteristic of Intercellular Communication; Which of These

question 16

Multiple Choice

Specificity is an important characteristic of intercellular communication; which of these best explains how it occurs?

• A) The phospholipid composition of the plasma membrane differs among cells.
• B) Protein receptors are only located on the surface of target cells.
• C) All cells have the same DNA, so any cell can express protein receptors for a specific chemical.
• D) Chemical messengers are all proteins, so bind only to receptors that are proteins.
• E) Protein receptors for chemical messengers are only expressed in specific target cells.