985073
Descripción
Test por stephiesteph01, actualizado hace más de 1 año
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Creado por stephiesteph01
hace más de 10 años
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Pregunta 1
Pregunta
concerning enzyme linked receptor structure, which of the following is FALSE?
Respuesta
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they may contain phospholipid lipid chains
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they may contain amino acids
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they consist of a single polypeptide
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all of the above are true
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abstain
Pregunta 2
Pregunta
ligand binding to an enzyme linked receptor results in...
Respuesta
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carboxylation
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hydrolysis
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dimerisation
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reduction
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abstain
Pregunta 3
Pregunta
tyrosine kinase transfers a __A___ to a __B___ residue in the target protein
Respuesta
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A = tyrosine B = phosphate
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A = phosphate B = tyrosine
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A = glutamate B = tyrosine
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A = tyrosine B = glutamate
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abstain
Pregunta 4
Pregunta
A phosphatase is best described as...
Respuesta
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an enzyme that removes a phosphate group
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an enzyme that inactivates PLC (phospholipase C)
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an enzyme that removes a phosphorous group
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an enzyme that removes a phosphate group added to proteins by kinases
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abstain
Pregunta 5
Pregunta
Tyrosine kinases are not the only type of kinases. From the list below, select which two are also kinases
Respuesta
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serine
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lysine
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proline
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valine
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glutamate (glutamic acid)
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threonine
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tyramine
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abstain
Pregunta 6
Pregunta
receptors for growth factors are an example of which type of cell receptor?
Respuesta
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ionotropic
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ligand-gated
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enzyme linked
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nuclear
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abstain
Pregunta 7
Pregunta
which of the following receptors is ASSOCIATED with an enzyme?
Respuesta
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receptor tyrosine kinase
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receptor serine kinase
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receptor guanylyl cyclase
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tyrosine kinase - linked receptor
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abstain
Pregunta 8
Pregunta
dimerization activates intrinsic tyr kinase activity in the ____ part of the receptor
Respuesta
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intracellular
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extracellular
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pericellular
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none of the above
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abstain
Pregunta 9
Pregunta
____A_____ tyr kinase creates different ___B___ sites for different combinations of intracellular signalling proteins which in turn determines signalling outcome
Respuesta
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A - autophosphorylated B - binding
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A - autophosphorylated B - docking
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A - dephosphorylated B - binding
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A - dephosphorylated B - docking
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abstain
Pregunta 10
Pregunta
binding of each signalling proteins to phosphotyrosines is...
Respuesta
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specific
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degenerate
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non-specific
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cooperative
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abstain
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