Refer to the Figure Below

question 47

Multiple Choice

Refer to the figure below. The figure shows a signal transduction pathway in a cell.How does the number of molecules change as the signal is carried in this pathway?

• A) The number of molecules gradually increases up to the point of cAMP production, then remains constant.
• B) The number of molecules gradually increases up to the point of cAMP production, then increases exponentially.
• C) The number of molecules maintains a constant of one-to-one signaling up to the point of cAMP production, then declines gradually.
• D) The transfer of signal from one step to the next is a linear process throughout the entire pathway with one molecule signaling the next.
• E) The transfer of signal from one step to the next is a random process with no specific trend in quantity of molecules produced at any given step.

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