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29 Cards in this Set
- Front
- Back
- 3rd side (hint)
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What are the 3 stages of cell communication?
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1. Reception
2. Transduction 3. Response |
p.200
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Which 2 types of signaling are local?
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1. Paracrine signaling
2. Synaptic signaling |
p.199
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Which type of signaling signals over greater distances?
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Hormonal
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p.199
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What type of signaling does PDGF use?
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Paracrine
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p.199
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What type of signaling does Acetylcholine use?
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Synaptic Signaling
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p.199
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What type of signaling does epinephrine use?
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Hormonal
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p.199
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What type of signaling does testosterone use?
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Hormonal
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p.199
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What is otherwise known as the fight or flight hormone?
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Epinephrine
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Class notes 3/22/04
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What is known as the process by which a signal on a cell's surface is converted into a specific cellular response in a series of steps?
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Signal Transduction Pathway
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p.198
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What type of receptor does epinephrine use?
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G-Protein linked receptor
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p.201
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What type of receptor does testosterone use?
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Intracellular receptor
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p.204
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What type of receptor does acetylcholine use?
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Ion-Channel Receptor
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p.204
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What type of receptor does PDGF use?
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Tyrosine-Kinase Receptor
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p.203
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Cell signaling is also known as ___?
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Signal Transduction
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What enzyme does G-Protein bind to?
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Adenylyl Cyclase
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p.202
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What type of cellular response does epinephrine promote?
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Increased heart rate
Increased blood pressure Increased sweat Muscle contraction |
Notes 3/22
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What is the first and second messengers in cell signaling from Epinephrine?
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1st = Epinephrine itself
2nd = cAMP |
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A protein changes shape during which stage of cell signaling?
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Transduction
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Notes 3/22
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Which receptors are located at the Plasma Membrane?
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G-Protein Linked Receptor
Tyrosine-Kinase Receptor Ion Channel Receptor |
p.202-4
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Which receptor is not located at the plasma membrane?
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Intracellular Receptor
(Cytosolic Receptor Protein) |
p.204
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What moves into the nucleus and becomes a transcription factor?
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Cytosolic receptor protein
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p.204
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What type of special protein controls which genes are turned on and are transcribed into mRNA?
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Transcription Factors
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p.204
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What type of cellular response does testosterone promote?
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Lower voice, facial hair
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Notes 3/22
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What type of cellular response does acetylcholine promote?
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Increase strength and rate of muscle contraction
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Notes 3/22
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What is the signal molecule called that attaches to the gated ion channel?
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Ligand
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Notes 3/22
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What type of cellular response does PDGF promote?
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Mitosis (healing)
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notes 3/22
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What is a major mechanism of signal transduction?
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Protein phosphorylation
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p.213
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What 2 activities does a cell regulate in response to a signal?
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1. Regulate enzyme activity
2. Regulate genes |
p.213
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When does the amplification of a chemical signal occur?
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When a receptor in the plasma membrane activates several G-protein molecules while a signal molecule is bound to it.
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p.214
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