Stem Cells

Neural stem cells from the brain can differentiate into... 

• only specialized brain cells .
• specialized brain cells and specialized skin cells. 
• all types of specialized cells. 
• only specialized blood cells. 

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Which of the following is NOT a source for stem cells?

• umbilical cord blood 
• early embryos 
• sperm and eggs 
• certain adult tissues 

Why might stem cell research lead to a cure for diabetes?

• Stem cells can be used to grow pancreas cells that produce insulin.
• Stem cells can create babies that have normal functioning pancreases.

Stem cells are

• cells that grow uncontrollably.
• undifferentiated and can develop into many types of cells.
• cells that never go through cell division.
• only found in embryos.

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Stem cells are used to __________.

• make clones
• create new species of animals
• make babies
• grow different types of tissues

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Which of the following cells is undifferentiated?

• cardiac muscle cell
• nerve cell
• liver cell
• stem cell

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What process best explains how muscle cells and nerve cells can develop from the same fertilized egg?

• genetic engineering
• survival of the fittest
• differentiation
• selective breeding

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Which best explains why muscle cells are different from blood cells?

• Muscle cells are produced by the brain, but blood cells are produced by the heart. 
• Different genes are activated in muscle cells than in blood cells. 
• Muscles cells experience different environmental influences than blood cells. 
• A mutation occurs during the development of muscle cells but not in blood cells. 

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What is the difference between embryonic stem cells and adult stem cells?

• Embryonic stem cells can differentiate into more cell types than adult stem cells
• Adult stem cells are pluripotent, just like embryonic stem cells
• Adult stem cells can differentiate into more cell types than embryonic stem cells
• Adult stem cells grow bigger than embryonic stem cells

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Medical research involving stem cells is important for ...

• to test the effectiveness of new drugs

• the generation of cells and tissues that can be used in cell based therapies

• to understand the consequences of turning genes off and on

• All of the above

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