Enzyme LInked Receptors

Description

Quiz on Enzyme LInked Receptors , created by stephiesteph01 on 08/06/2014.
stephiesteph01
Quiz by stephiesteph01, updated more than 1 year ago
stephiesteph01
Created by stephiesteph01 over 10 years ago
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1

Resource summary

Question 1

Question
concerning enzyme linked receptor structure, which of the following is FALSE?
Answer
  • they may contain phospholipid lipid chains
  • they may contain amino acids
  • they consist of a single polypeptide
  • all of the above are true
  • abstain

Question 2

Question
ligand binding to an enzyme linked receptor results in...
Answer
  • carboxylation
  • hydrolysis
  • dimerisation
  • reduction
  • abstain

Question 3

Question
tyrosine kinase transfers a __A___ to a __B___ residue in the target protein
Answer
  • A = tyrosine B = phosphate
  • A = phosphate B = tyrosine
  • A = glutamate B = tyrosine
  • A = tyrosine B = glutamate
  • abstain

Question 4

Question
A phosphatase is best described as...
Answer
  • an enzyme that removes a phosphate group
  • an enzyme that inactivates PLC (phospholipase C)
  • an enzyme that removes a phosphorous group
  • an enzyme that removes a phosphate group added to proteins by kinases
  • abstain

Question 5

Question
Tyrosine kinases are not the only type of kinases. From the list below, select which two are also kinases
Answer
  • serine
  • lysine
  • proline
  • valine
  • glutamate (glutamic acid)
  • threonine
  • tyramine
  • abstain

Question 6

Question
receptors for growth factors are an example of which type of cell receptor?
Answer
  • ionotropic
  • ligand-gated
  • enzyme linked
  • nuclear
  • abstain

Question 7

Question
which of the following receptors is ASSOCIATED with an enzyme?
Answer
  • receptor tyrosine kinase
  • receptor serine kinase
  • receptor guanylyl cyclase
  • tyrosine kinase - linked receptor
  • abstain

Question 8

Question
dimerization activates intrinsic tyr kinase activity in the ____ part of the receptor
Answer
  • intracellular
  • extracellular
  • pericellular
  • none of the above
  • abstain

Question 9

Question
____A_____ tyr kinase creates different ___B___ sites for different combinations of intracellular signalling proteins which in turn determines signalling outcome
Answer
  • A - autophosphorylated B - binding
  • A - autophosphorylated B - docking
  • A - dephosphorylated B - binding
  • A - dephosphorylated B - docking
  • abstain

Question 10

Question
binding of each signalling proteins to phosphotyrosines is...
Answer
  • specific
  • degenerate
  • non-specific
  • cooperative
  • abstain
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