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

Score =

Correct answers:

Cell Communication And Signalling MCQs Parts => 1..