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11 Cards in this Set
- Front
- Back
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Which pathway converts signals received at a cell's surface into cellular responses |
signal transduction pathways |
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how do cells in multicellular organisms communicate? |
via signalling molecules |
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In local signaling, animal cells may communicate by |
direct contact |
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Name three types of cell signaling |
Paracrine signaling Synaptic Signaling Endocrine signaling |
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Describe both types of local signaling |
1. Paracrine Signaling: uses growth factors to stimulate a nearby target cell to grow and divide 2. Synaptic Signaling: occurs in nervous system, a neurotransmitter is released in response to an electric signal |
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Describe a type of long distance signaling + explains the ability the cell must have to respond to the signal |
Endocrine signaling: a specialized cells release hormones which travel to target cells via the circulatory system ** the cell must have a receptor specific to the signal that has been released |
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What are the three stages of cell signaling |
1. reception 2. transduction 3. response |
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Describe reception |
a traget cell detects a signalling molecule which then binds to a receptor protein (+ shape of receptor is altered) |
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What is a ligand |
a signal molecule |
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Signaling molecule can be (name 3 |
- growth factor - electric signal - hormone |
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qwe |
qqwe |
