Cell Signalling Concepts

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Questions and Answers

What is the primary purpose of cell signaling?

  • To create new cells
  • To build cell structures
  • To allow cells to get energy
  • To facilitate communication between cells (correct)

Cell signaling can occur only through electrical pathways.

False (B)

What are the three main steps in a typical signaling pathway?

Reception, Transduction, Response

In cell signaling, the molecules that carry messages in chemical pathways are referred to as ______.

<p>signal molecules</p> Signup and view all the answers

Match the following components of a signaling pathway with their roles:

<p>Reception = Detection of signal molecules Transduction = Conversion of the signal into a cellular response Response = Activation of cellular response Relay molecules = Transmit signals within the cell</p> Signup and view all the answers

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Flashcards

Cell Signaling

The process by which cells communicate and send messages.

Signaling Pathway

A series of steps that lead to a cellular response after a signal is received.

Reception

The first step in a signaling pathway where a signal molecule binds to a receptor.

Transduction

The process of transforming a signal into a different form inside the cell, leading to a response.

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Response

The final result of a signaling pathway, where the cell executes an action based on the incoming signal.

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Study Notes

Cell Signalling

  • Cell signaling is a method for cells to communicate with each other, over short or long distances.
  • It enables organisms to respond to external stimuli and communicate between cells.
  • This process can include electrical pathways and chemical pathways.
  • Examples of signal molecules in chemical pathways are not provided.

Signalling Pathway

  • A typical signalling pathway has three main stages:
    • Reception: A signalling molecule binds to a receptor on the cell membrane.
    • Transduction: Relay molecules within the cell transmit the signal.
    • Response: The signal triggers a cellular response.

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