Which of the Following Is a Common Means by Which

question 400

Multiple Choice

Which of the following is a common means by which binding of an extracellular chemical messenger with a cell's receptor brings about a desired intracellular response

• A)opening or closing of specific channels to regulate ionic movement across the plasma membrane
• B)activation of an extracellular, second messenger system
• C)alteration of DNA structure by attaching to the nucleus
• D)combination with surface receptor