Stem Cells

Which  is of the following is not an example of cell differentiation? 

• Stem cells from bone marrow develop into blood cells
• Bone marrow cells are used to repair damage to heart tissue
• a leaf cell divides as a plant leaf grows
• A fertilized egg develops limbs and a hand

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Medical researchers are interested in stem cells because they?

• are found in all types of tissues
• can produce different cells types
• are highly specialized
• are found only in embryos

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All organisms start life as__________?

• a developed embryo
• a blastocyst 
• one cell
• pluripotent cells 

The process by which cells become specialized is known as?

• stem cell research
• embryonic development 
• totipotent cell strucutre
• cell differentiation 

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What is a stem cell?

• a cell that has a stem
• an unspecialized cells from which differentiated cells develop 
• cells that are found in plant stem
• cells that are found in bacteria only

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Which of the following cells has the ability to form any tissue in the body?

• blastoycst 
• pluripotent
• multipotent
• totipotent

Embryonic stem cells are?

• mutlipotent
• pluripotent
• totipotent
• isopotent 

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Adult stem cells of a given organ or tissue typically produce?

• Only the type of cells that are unique to that tissue 
• All types of cells of all   tissues
• Most types of cells of all   tissues
• Some types of cells of all   tissues

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Stem cell research is controversial because in involves?

• social issues
• ethical issues
• educational issues
• economical issues

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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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