

Unit 4: Cell Communication and Cell Division
Flashcard
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Biology
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Professional Development
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Practice Problem
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Hard
John DeLuca
FREE Resource
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38 questions
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1.
FLASHCARD QUESTION
Front
Signal Transduction Pathway
Back
A series of molecular interactions that convert a signal received by a cell's receptor into a specific cellular response.
2.
FLASHCARD QUESTION
Front
Ligand
Back
A molecule that binds specifically to a receptor site of another molecule, often to initiate signal transduction.
3.
FLASHCARD QUESTION
Front
Receptor Protein
Back
A protein embedded in the cell membrane or within the cell that binds to specific ligands to initiate a cellular response.
4.
FLASHCARD QUESTION
Front
G Protein-Coupled Receptor (GPCR)
Back
A type of receptor that activates a G protein when a ligand binds, triggering downstream signaling.
5.
FLASHCARD QUESTION
Front
Second Messenger
Back
Small molecules or ions (e.g., cAMP, Ca²⁺) that relay signals received by receptors to target molecules within the cell.
6.
FLASHCARD QUESTION
Front
Kinase Cascade (Phosphorylation Cascade)
Back
A sequence of events where one enzyme phosphorylates another, causing a chain reaction that leads to a cellular response.
7.
FLASHCARD QUESTION
Front
Amplification
Back
The process by which a single signal molecule can cause a cascade of responses, amplifying the original signal.
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