Embryonic Stem Cells
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Questions and Answers

What are embryonic stem cells?

  • Cells isolated from the inner cell mass of the blastocyst of a human embryo (correct)
  • Cells derived from the somatic cells of an adult human
  • Cells obtained from the outer layer of the blastocyst of a human embryo
  • Cells extracted from the umbilical cord of a newborn baby

    • How can embryonic stem cells be obtained?

  • Direct extraction from the umbilical cord
  • In vitro fertilization (IVF) and somatic cell nuclear transfer (SCNT) (correct)
  • Transplantation from another individual after birth
  • Spontaneous generation within the body

    • What is the purpose of in vitro fertilization in obtaining embryonic stem cells?

  • It enables the extraction of stem cells from the umbilical cord
  • It allows for the removal and growth of the internal cells of the embryo in a lab setting (correct)
  • It promotes the development of adult stem cells
  • It stimulates the differentiation of stem cells into precursors of any cell type

    • What is somatic cell nuclear transfer commonly used for?

    <p>Cloning to produce embryonic stem cells (B)</p> Signup and view all the answers

    What was the first mammal animal developed using somatic cell nuclear transfer?

    <p>Sheep Dolly (A)</p> Signup and view all the answers

    Study Notes

    Embryonic Stem Cells

    • Embryonic stem cells are cells derived from embryos, which have the ability to differentiate into all cell types in the body.

    Obtaining Embryonic Stem Cells

    • Embryonic stem cells can be obtained from excess embryos created during in vitro fertilization (IVF) procedures.
    • They can also be obtained through somatic cell nuclear transfer (SCNT), a process where the nucleus of an adult cell is transferred into an egg cell.

    Purpose of In Vitro Fertilization

    • The purpose of in vitro fertilization (IVF) in obtaining embryonic stem cells is to generate excess embryos that are not used for reproductive purposes.

    Somatic Cell Nuclear Transfer

    • Somatic cell nuclear transfer (SCNT) is commonly used for cloning animals and potentially for therapeutic purposes.

    First Mammal Developed using SCNT

    • The first mammal developed using somatic cell nuclear transfer (SCNT) is Dolly the sheep, cloned in 1996.

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    Test your knowledge about embryonic stem cells and their potential for medical use. Learn about the ethical and legal issues surrounding their use and the methods for obtaining these cells.

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