Question 1

Cells of the inner cell mass in an early mammalian embryo can be isolated and grown in culture. Which of the following is NOT true regarding these cells?

Accepted Answer

A)  They are totipotent. 
B)  They can be introduced into another developing embryo where their progeny become incorporated into the resulting adult animal, even into its germ line. 
C)  They are stem cells. 
D)  They can be manipulated in culture to give rise to almost any type of differentiated cell. 
A)  They are totipotent. 
B)  They can be introduced into another developing embryo where their progeny become incorporated into the resulting adult animal, even into its germ line. 
C)  They are stem cells. 
D)  They can be manipulated in culture to give rise to almost any type of differentiated cell.

Question 2

Indicate true (T) and false (F) statements below regarding the regenerative capacity of the planarian Schmidtea mediterranea. Your answer would be a four-letter string composed of letters T and F only, e.g. TTTF.
( )	When the animal is starved, some of its cells are cannibalized by other cells.
( )	The differentiated cells in the animal's body are continually replaced.
( )	Even a single healthy cell can rescue a lethally irradiated animal from death.
( )	Only neoblasts are capable of rescuing a lethally irradiated animal from death.

Accepted Answer

When starved, Schmidtea undergoes degr

Question 3

A physician had prescribed a differential white blood cell count to help diagnose a sick child with sustained fever and weight loss. The results show a significant increase in the number of eosinophils beyond the normal range for healthy individuals. This is most likely due to …

Accepted Answer

A)  bacterial infection. 
B)  parasitic infection. 
C)  viral infection. 
D)  kidney failure. 
E)  internal bleeding. 
A)  bacterial infection. 
B)  parasitic infection. 
C)  viral infection. 
D)  kidney failure. 
E)  internal bleeding.

Question 4

The GM progenitor cell gives rise to two main classes of white blood cells in the presence of appropriate colony-stimulating factors. Both of these cell types …

Accepted Answer

A)  have relatively long half-lives, being capable of living for months if not years. 
B)  circulate in the bloodstream for most of their life-span. 
C)  are phagocytes. 
D)  are unaffected by colony-stimulating factors once terminally differentiated. 
E)  All of the above. 
A)  have relatively long half-lives, being capable of living for months if not years. 
B)  circulate in the bloodstream for most of their life-span. 
C)  are phagocytes. 
D)  are unaffected by colony-stimulating factors once terminally differentiated. 
E)  All of the above.

Question 5

Which of the following tasks is possible with current stem-cell and reprogramming technology?

Accepted Answer

A)  Guiding ES cells to generate any desired adult cell type. 
B)  Generating functional whole organs from iPS cells for transplantation. 
C)  Forcing transdifferentiation of any terminally differentiated cell into another cell. 
D)  In vitro screening for drug discovery using patient-specific iPS-derived cells as disease models. 
E)  All of the above. 
A)  Guiding ES cells to generate any desired adult cell type. 
B)  Generating functional whole organs from iPS cells for transplantation. 
C)  Forcing transdifferentiation of any terminally differentiated cell into another cell. 
D)  In vitro screening for drug discovery using patient-specific iPS-derived cells as disease models. 
E)  All of the above.

Cells of the inner cell mass in an early mammalian embryo can be isolated and grown in culture. Which of the following is NOT true regarding these cells?

A physician had prescribed a differential white blood cell count to help diagnose a sick child with sustained fever and weight loss. The results show a significant increase in the number of eosinophils beyond the normal range for healthy individuals. This is most likely due to …

The GM progenitor cell gives rise to two main classes of white blood cells in the presence of appropriate colony-stimulating factors. Both of these cell types …

Which of the following tasks is possible with current stem-cell and reprogramming technology?

Cells and Genomes

Cell Chemistry and Bioenergetics

Proteins

DNA, Chromosomes, and Genomes

DNA Replication, Repair, and Recombination

How Cells Read the Genome: From DNA to Protein

Control of Gene Expression

Analyzing Cells, Molecules, and Systems

Visualizing Cells

Membrane Structure

Membrane Transport of Small Molecules and the Electrical Properties of Membranes

Intracellular Compartments and Protein Sorting

Intracellular Membrane Traffic

Energy Conversion: Mitochondria and Chloroplasts

Cell Signaling

The Cytoskeleton

The Cell Cycle

Cell Death

Cell Junctions and the Extracellular Matrix

Cancer

Development of Multicellular Organisms

Pathogens and Infection

The Innate and Adaptive Immune Systems

Filters

Exam 22: Stem Cells and Tissue Renewal

Cells of the inner cell mass in an early mammalian embryo can be isolated and grown in culture. Which of the following is NOT true regarding these cells?

A physician had prescribed a differential white blood cell count to help diagnose a sick child with sustained fever and weight loss. The results show a significant increase in the number of eosinophils beyond the normal range for healthy individuals. This is most likely due to …

The GM progenitor cell gives rise to two main classes of white blood cells in the presence of appropriate colony-stimulating factors. Both of these cell types …

Which of the following tasks is possible with current stem-cell and reprogramming technology?

Cells and Genomes

Cell Chemistry and Bioenergetics

Proteins

DNA, Chromosomes, and Genomes

DNA Replication, Repair, and Recombination

How Cells Read the Genome: From DNA to Protein

Control of Gene Expression

Analyzing Cells, Molecules, and Systems

Visualizing Cells

Membrane Structure

Membrane Transport of Small Molecules and the Electrical Properties of Membranes

Intracellular Compartments and Protein Sorting

Intracellular Membrane Traffic

Energy Conversion: Mitochondria and Chloroplasts

Cell Signaling

The Cytoskeleton

The Cell Cycle

Cell Death

Cell Junctions and the Extracellular Matrix

Cancer

Development of Multicellular Organisms

Pathogens and Infection

The Innate and Adaptive Immune Systems

Filters