Science Quiz / Cell Signaling

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Can you name the the HYTQ concepts?

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QuestionAnswer
cAMP is synthesized by what?
release mechanism for catecholamine hormones
CRE stands for what?
Ligand binding activates a G-protein (GTP-binding protein). Activated G-protein stimulates (or inhibits) an effector
these receptors transduce signals across the plasma membrane via changes in receptor protein conformation that lead to changes in receptor protein activity and/or receptor protein
thyroid hormones bind which type of receptor? (cell surface or intracellular)
PKA catalytic subunits phosphorylate what?
steroid hormones bind which type of receptor? (cell surface or intracellular)
release mechanism for steroid hormones
term for signal that stably occupies a receptor
this type of receptor protein is a channel for ion transport
these enzymes remove phosphate groups added by kinases
G proteins are active when what molecule is bound?
true or false: intracellular receptors regulate transcription.
release mechanism for protein or peptide hormones
Cytosolic domain of this receptor either has intrinsic enzymatic activity or activates an associated enzyme. There is no enzyme activity without ligand.
term for molecules that mimics signal of ligand (e.g., drug)
QuestionAnswer
which subunit of the G-protein binds GTP and GDP?
Active RTK phosphorylates ______ residues
these proteins have multiple protein binding domains and can form multi-protein complexes for signal transduction
hydrophilic molecules generally bind to _____ receptors.
these receptors bind to signaling molecules that do not diffuse into cell
this protein inactivates G protein
this protein activates G proteins by exchanging GDP for GTP
catecholamine hormones bind which type of receptor? (cell surface or intracellular)
these receptors bind to signaling molecules that diffuse into the cell
Phosphotyrosines recruit which adaptor protein
cAMP binds the ______ subunit of protein kinase A (PKA)
peptide or protein hormones bind which type of receptor? (cell surface or intracellular)
release mechanism for thyroid hormones
this term describes steps that “transduce” signal binding to receptor into cellular response(s)
enzyme that phosphorylates protein target
hydrophobic molecules generally bind to _____ receptors.

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