Developmental Mechanisms for the MCAT: Tutoring Solution 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. What is a ligand?

Question 2 2. Xolloid is a/an:

Question 3 3.

Which of the following contribute to the formation of the concentration gradient of BMP-4 in the frog embryo?

A. BMP-4 is produced in the ventral portion of the embryo

B. Chordin is produced in Spemann's Organizer

C. Chordin inhibits BMP-4

D. Xolloid is produced in the ventral portion of the embryo.

E. Xolloid degrades chordin.

Question 4 4. Out of the following organisms, which one would you expect to have the least complete and detailed fate map?

Question 5 5. What is a fate map?

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Question 6 6. Which of the following refers to the underbelly side of an animal?

Question 7 7. For which of these organisms have scientists created the most complete and detailed fate map?

Question 8 8. Which of the following is not a true statement about transcription factors?

Question 9 9.

The transcription of the following genes is regulated by the following combinations of binding sites.

Gene 1 is regulated by binding sites A, B and D

Gene 2 is regulated by binding sites A, D and F

Gene 3 is regulated by binding sites B, C and D

Gene 4 is regulated by binding sites B, D and E

Gene 5 is regulated by binding sites A, D and E.

If transciption factors TF-A, TF-B, TF-D and TF-E are all active in the cell, which genes will be transcribed?

Question 10 10. What is 'the node'?

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Question 11 11. Which of the following is not an organizer?

Question 12 12. What is the biggest difference between a liver cell and a brain cell?

Question 13 13. When chordin binds to BMP-4, what effect does this have on the BMP-4 concentration gradient?

Question 14 14. Being able to activate expression of a fluorescent protein when a specific gene is expressed has been most useful for fate mapping in which of the following organisms?

Question 15 15. What is a protease?

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Question 16 16. How were Spemann and Mangold able to tell that the organizer was directing cells of the host embryo to change their fates?

Question 17 17. Which of the following statements is true about chordin?

Question 18 18. What is a somatic cell?

Question 19 19. Which of the following is true about Spemann's experiments with 2-cell-stage embryos?

Developmental Mechanisms for the MCAT: Tutoring Solution 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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