Describe how a cell responds to a signal
Inside the cell, ligands bind to their internal receptors, allowing them to directly affect the cell’s DNA and protein-producing machinery. Using signal transduction pathways, receptors in the plasma membrane produce a variety of effects on the cell. The results of signaling pathways are extremely varied and depend on the type of cell involved as well as the external and internal conditions. A small sampling of responses is described in this outcome.
What You’ll Learn to Do
- Describe how signaling pathways direct protein expression, cellular metabolism, and cell growth
- Recognize the role of apoptosis in the development and maintenance of a healthy organism
Learning Activities
The learning activities for this section include the following:
- Expression and Growth
- Cell Death
- Self Check: Response to the Signal
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