16 questions
Stem cells are
undifferentiated or unspecialized cells in the body.
differentiated or specialized cells in the body.
only found in the inner mass cells of blastocyst
only found in a fetus
_________ refers to a stem cell's ability to differentiate into other cell types
potency
potential
dormancy
aptitude
a cell that has the most potential, able to become any type of cell.
Totipotent
Pluripotent
Multipotent
Unipotent
can become any of the three cell layers in a
developing embryo (endoderm, mesoderm, ectoderm), but not the placenta surrounding the embryo.
Totipotent
Pluripotent
Multipotent
Unipotent
partially differentiated, with only the capacity to become one cell type.
Totipotent
Pluripotent
Multipotent
Unipotent
Which has the highest potency?
Morula
Blastocyst
Fetus
Adult
Which has the lowest potency?
Morula
Blastocyst
Fetus
Adult
Which cell type would divide the most rapidly?
Skin
Muscle
Nerve
Bone
Which cell type would divide the least rapidly?
Skin
Red Blood cells
Nerve
Hair
As cells become more specialized
they gain more genes
they can be stem cells again
some of their genes get lost
they don't have the ability to become other types of cells but as is
Why might stem cell research lead to a cure for diabetes?
Stem cells can be used to grow pancreas cells that produce insulin and glucagon hormones.
Stem cells can create babies that have normal functioning pancreases.
Stem cells can cure the pancreas disease.
Stem cells can maintain the glucose level in the bllod.
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
Why is the use of embryonic stem cells controversial?
The embryos are destroyed in the process of extracting the stem cells.
People consider their use as destroying a life.
They are taken from little kids, which is painful.
They are put into a different person.