Multiple Choice
Which of the following is NOT a primary type of sensory receptor involved in cell signaling?
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10. Cell Signaling
Introduction to Cell Signaling
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Which of the following affects all other steps in the cell communication process?
A
The cellular response to the signal
B
The activation of secondary messengers
C
The phosphorylation of target proteins
D
The binding of a signaling molecule to its receptor
Verified step by step guidance1
Understand the concept of cell communication: Cell communication involves a series of steps where a signaling molecule binds to a receptor, triggering a cascade of events that lead to a cellular response.
Recognize the importance of the signaling molecule binding to its receptor: This is the initial step in the process and serves as the trigger for all subsequent steps in cell communication.
Explain how receptor binding activates secondary messengers: Once the signaling molecule binds to the receptor, it often leads to the activation of secondary messengers, which amplify and relay the signal within the cell.
Describe the role of phosphorylation of target proteins: Secondary messengers can activate enzymes like kinases, which phosphorylate target proteins to modify their activity and propagate the signal.
Conclude with the cellular response: The final step in cell communication is the cellular response, which could involve changes in gene expression, enzyme activity, or other cellular functions. However, all these steps depend on the initial binding of the signaling molecule to its receptor.
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