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Questions and Answers
What are embryonic stem cells?
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?
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?
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?
What is somatic cell nuclear transfer commonly used for?
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What was the first mammal animal developed using somatic cell nuclear transfer?
What was the first mammal animal developed using somatic cell nuclear transfer?
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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.
