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Cell Biology
Cell Biology

... Cancer cells do not respond to the signals that control the growth of most cells ...
The Cell
The Cell

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Power Point - Science Olympiad
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Chapter 08
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Biology worksheet for class IX
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Characteristics of Living Things and Cell Structure and Function PPT
Characteristics of Living Things and Cell Structure and Function PPT

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The Cell in Action
The Cell in Action

... Cells normally want to remain in an isotonic solution, where the concentration of liquid inside is the same as the concentration of the liquid outside of it. ...
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Signal transduction



Signal transduction occurs when an extracellular signaling molecule activates a specific receptor located on the cell surface or inside the cell. In turn, this receptor triggers a biochemical chain of events inside the cell, creating a response. Depending on the cell, the response alters the cell's metabolism, shape, gene expression, or ability to divide. The signal can be amplified at any step. Thus, one signaling molecule can cause many responses.
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