Cell Signaling and Signal Transduction
Flashcard
•
Biology
•
12th Grade
•
Hard
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15 questions
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1.
FLASHCARD QUESTION
Front
What is a ligand in cell signaling?
Back
A ligand is a molecule that binds to a specific receptor to initiate a cellular response.
2.
FLASHCARD QUESTION
Front
What is the role of secondary messengers in signal transduction pathways?
Back
They amplify and relay the signal within the cell.
3.
FLASHCARD QUESTION
Front
What are the main components of a signal transduction pathway?
Back
Ligands, receptors, secondary messengers, and target proteins.
4.
FLASHCARD QUESTION
Front
What is the function of G protein-coupled receptors (GPCRs)?
Back
GPCRs detect molecules outside the cell and activate internal signal transduction pathways.
5.
FLASHCARD QUESTION
Front
What is cAMP and its role in cell signaling?
Back
cAMP (cyclic adenosine monophosphate) is a secondary messenger that transmits signals from receptors to target molecules inside the cell.
6.
FLASHCARD QUESTION
Front
How do ligand-gated ion channels function?
Back
They open or close in response to the binding of a ligand, regulating the flow of specific ions across the cell membrane.
7.
FLASHCARD QUESTION
Front
What is the significance of phosphorylation in signal transduction?
Back
Phosphorylation modifies proteins, altering their activity and function, which is crucial for transmitting signals.
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