Lesson 25: Embryology Week 1 Quiz

Please sign up for the course before taking this quiz.

  1. 1. It takes an entire day for the zygote to go through its first mitosis.

    1

  2. 2. Totipotent means that the cell’s DNA is completely open, so that any part of it can be read and copied.

    1

  3. 3. “Morula” comes from the Greek word “morus” which means:

    1

  4. 4. Where does the first week of development occur?

    1

  5. 5. Which is totipotent?

    1

  6. 6. Which stage of development to scientist target for harvesting? (This would apply to experiments using mice, rats, and even sea urchins.)

    1

  7. 7. Human and mammal eggs do not go through an hatching process, only bird and reptile eggs do this.

    1

  8. 8. During the first week of development the number of cells increases but the overall size stays the same.

    1

  9. 9. The development that happens in the first week is essentially the same in any type of animal.

    1

  10. 10. The protective layer around the first-week developing cells is called the:

    1

  11. 11. The cells in a newborn baby’s body are still pluripotent.

    1

  12. 12. Blastula and blastocyst mean the same thing.

    1

  13. 13. What is an ectopic pregnancy?

    1

  14. 14. What do gap junctions do?

    1

  15. 15. The “inner cell mass” will grow to become the embyro (baby) and the cells in the outer ring will become the placenta and the outer sac.

    1
Back to: Lesson 25: Embryology Week 1