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GRE Biology: Cell Communication Chapter Exam

Exam Instructions:

Choose your answers to the questions and click 'Next' to see the next set of questions. You can skip questions if you would like and come back to them later with the yellow "Go To First Skipped Question" button. When you have completed the practice exam, a green submit button will appear. Click it to see your results. Good luck!

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Question 1 1. Why might amplification of a signal be important during transduction?

Question 2 2. Which statement is NOT true about cellular response?

Question 3 3. Where are the two places we find receptor proteins?

Question 4 4. Which is a common type of cellular response?

Question 5 5. All of the following statements are true, EXCEPT:

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Question 6 6. What is the correct order in which cell signaling occurs?

Question 7 7. Cellular response is which step in the signal transduction pathway?

Question 8 8. What are the steps of transduction collectively known as?

Question 9 9. How do we know that cell signaling is an ancient process?

Question 10 10. When does reception occur during cell signaling?

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Question 11 11. Dopamine is used to increase the strength and rate of contraction of the heart`s cells. This drug is a ligand that binds beta-adrenergic receptors in the cell. What action would a drug have that blocks the union of dopamine and the beta-adrenergic receptors?

Question 12 12. Which is the final step in cell signaling?

Question 13 13. Enzymes that transfer phosphate groups to a protein are known as

Question 14 14. What happens to a receptor protein once it binds with a ligand?

Question 15 15. Why are second messengers named as such?

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Question 16 16. Which cell receives the signal during cellular communication?

Question 17 17. When protein kinases act on each other which chain of events is set into motion?

Question 18 18. How do scaffold proteins make cellular response more efficient?

Question 19 19. Specifically, what does a signaling molecule bind to in order to start transduction?

Question 20 20. Why is it important to terminate a cellular response once it is complete?

GRE Biology: Cell Communication Chapter Exam Instructions

Choose your answers to the questions and click 'Next' to see the next set of questions. You can skip questions if you would like and come back to them later with the yellow "Go To First Skipped Question" button. When you have completed the practice exam, a green submit button will appear. Click it to see your results. Good luck!

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