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Cell Organelle Worksheet
Cell Organelle Worksheet

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Cells and Heredity

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Chapter 3 Chemistry of Life Modern Biology Textbook Holt

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Objective 7: TSWBAT identify factors which stimulate and

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Chapter 18 - Austin Community College

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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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