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GRE Biology: Animal Reproduction & Development 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. Which of the following is true about sperm?

Question 2 2. Which of the following is crucial for proper development of a baby's lungs?

Question 3 3. Which of the following is true about Spemann's experiments with 2-cell-stage embryos?

Question 4 4. For which of these organisms have scientists created the most complete and detailed fate map?

Question 5 5. Which of the following is an important function of the zona pellucida?

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Question 6 6. 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 7 7. Which of these cells only exists in the fallopian tube?

Question 8 8. During oogenesis, when does the first meiotic division take place?

Question 9 9. How does cleavage differ from normal mitosis?

Question 10 10. Mary is pregnant and is telling you about how she is worried that her baby is floating around in her uterus with nothing holding him in place. Which of the following would be most helpful to tell Mary about in order to ease her worries?

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Question 11 11. Which of the following is a somatic cell?

Question 12 12. Which embryonic stage consists of a solid, compact mass of sixteen or more cells?

Question 13 13. In humans, when are primary oocytes made?

Question 14 14. What is 'the node'?

Question 15 15. In this drawing of a frog gastrula, which letter corresponds to the ectoderm?

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Question 16 16.

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 17 17. What is the main purpose of gastrulation?

Question 18 18. Which of the following is not a true statement about transcription factors?

Question 19 19. Which of the four extraembryonic membranes maintains the same form and function in birds and mammals?

Question 20 20. Which part of the mammalian blastocyst will eventually become the embryo itself and its surrounding membranes?

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Question 21 21. When chordin binds to BMP-4, what effect does this have on the BMP-4 concentration gradient?

Question 22 22. Which of the following statements is true about the intervillous space?

Question 23 23. Which of the following is the last stage of mammalian development to occur before implantation in the uterus?

Question 24 24. Which of the following describes a zygote?

Question 25 25. Which of the following contains mostly maternal cells?

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Question 26 26. What is a protease?

Question 27 27. Which of the following is not an organizer?

Question 28 28. Which of the following best describes what can be found in chorionic villi?

Question 29 29. The heart, blood vessels, blood cells, skeleton, kidney, spleen, and muscles are all tissues or organs that arise from what primary germ layer?

Question 30 30. Out of the following organisms, which one would you expect to have the least complete and detailed fate map?

GRE Biology: Animal Reproduction & Development 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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