Wednesday, September 7, 2016

Cell Communication And Signalling MCQs Part 1

Cell Communication And Signalling MCQs Part 1
1. Which of the following is the correct order of events in signal transduction?
  • Receptor -> Chemical Signal -> Target Proteins -> Intracellular Proteins ->Cell Response
  • Chemical Signal -> Target Proteins-> Receptor -> Intracellular Proteins ->Cell Response
  • Chemical Signal -> Receptor -> Intracellular Proteins -> Target Proteins -> Cell Response
  • Chemical Signal -> Receptor -> Target Proteins -> Intracellular Proteins -> Cell Response
2. Which of the following types of chemical signals is secreted in the blood and travels long distances to its target.
  • Neurotransmitters
  • Cytokines
  • Hormones
  • Target Proteins
3. Which of the following is a characteristic of a receptor?
  • Speed
  • Specificity
  • Saturation
  • All except a
4. This type of extracellular receptor causes a transporter to open or close to allow particles through once a chemical signal binds.
  • G couple Protein
  • JAK Kinase
  • Tyrosine Kinase
  • Ligand Gated Ion Channel
5. An intracellular portion of this receptor phosphorylates intracellular Proteins.
  • G coupled Protein Receptor
  • Tyrosine Kinase
  • Ligand Gated Ion Channel
  • All of the following
6. Once Adenylyl cyclase is activated it
  • Opens Ca2+ doors on the Sarcoplasmic Reticulum
  • Makes cAMP
  • Phosphorylates intracellular proteins
  • Causes a change in membrane potential
7. IP3 does which of the following?
  • Opens Ca2+ doors on the Sarcoplasmic Reticulum
  • Activates target proteins
  • Both a and b
  • None of the above
8. An insulin receptor is an example a _____________ receptor.
  • Tyrosine Kinase
  • G couple Protein
  • Ligand Gated Ion Channel
  • JAK Kinase
9. Most cytokine receptors are an example a _____________ receptor.
  • Tyrosine Kinase
  • G couple Protein
  • Ligand Gated Ion Channel
  • JAK Kinase
10. Beta adrenergic receptors on cardiac contractile cells are an example a _____________ receptor.
  • Tyrosine Kinase
  • G couple Protein
  • Ligand Gated Ion Channel
  • JAK Kinase
Cell Communication And Signalling MCQs

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