Question 1

What observation in C. elegans suggested that cell death occurs as a specific developmental fate?

Accepted Answer

Researchers discovered that of

Question 2

Which human disease could potentially be cured with stem cell transplantation therapy?

Accepted Answer

Parkinson's disease

Question 3

Which of the following events is not associated with apoptosis?

Accepted Answer

A)  Fragmentation of chromosomal DNA 
B)  Condensation of chromatin 
C)  Breaking up of the cell nucleus 
D)  Cell cycle re-entry 
A)  Fragmentation of chromosomal DNA 
B)  Condensation of chromatin 
C)  Breaking up of the cell nucleus 
D)  Cell cycle re-entry

Question 4

When fragmented nuclear DNA is visualized by gel electrophoresis following induction of apoptosis, why do the fragments almost always appear as multiples of 200 base pairs?

Accepted Answer

DNA exists in the nucleus as chromatin a

Question 5

Which of the following signaling pathways is not important to stem cell physiology?

Accepted Answer

A)  Wnt 
B)  Notch 
C)  TGF-β 
D)  Bax 
A)  Wnt 
B)  Notch 
C)  TGF-β 
D)  Bax

Question 6

With the birth of _______, Wilmut and colleagues became the first scientists to produce a successfully cloned mammal by somatic cell nuclear transfer.

Accepted Answer

The answer of With the birth of _______, Wilmut and...

Question 7

Which of the following adult cell types is arrested in G0?

Accepted Answer

A)  Fibroblasts 
B)  Endothelial cells 
C)  Liver cells 
D)  All of the above 
A)  Fibroblasts 
B)  Endothelial cells 
C)  Liver cells 
D)  All of the above

Question 8

Why are cells with damaged genomes dangerous and often destroyed?

Accepted Answer

They may have suffer

Question 9

In the 1970s and 1980s, investigators in the laboratory of Robert Horvitz demonstrated the existence of genes that directly regulate a process of programmed cell death. They did their work in C. elegans, a small nematode worm. What is the likely reason that they did these experiments with C. elegans cells and not with mammalian or human cells?

Accepted Answer

The investigators studied development in

Question 10

When two-thirds of the liver of a rat is cut away, what happens to the remaining cells?

Accepted Answer

They re-enter the ce

Question 11

How does tumor necrosis factor (TNF) trigger apoptosis?

Accepted Answer

TNF binds to TNF receptors in the cell m

Question 12

What is the difference between an initiator caspase and an effector caspase?

Accepted Answer

An initiator caspase starts a

Question 13

Goblet cells and enteroendocrine cells have the same stem cells as absorptive epithelial cells.

Accepted Answer

A) True 
 B)False

Question 14

Following injury or exercise, _______ cells become activated and repair damaged skeletal muscle.

Accepted Answer

The answer of Following injury or exercise, _______ cells become...

Question 15

Programmed cell death plays an important role in development.

Accepted Answer

A) True 
 B)False

Question 16

Which statement about cloning by somatic cell nuclear transfer is false?

Accepted Answer

A)  The nucleus of an adult somatic cell is transferred to an enucleated, unfertilized egg. 
B)  Somatic cell nuclear transfer was first carried out in frogs in the 1950s. 
C)  In the laboratory, the cloned egg is cultured to an early embryo stage and then transferred to a foster mother. 
D)  The cloned embryo is genetically identical to the foster mother. 
A)  The nucleus of an adult somatic cell is transferred to an enucleated, unfertilized egg. 
B)  Somatic cell nuclear transfer was first carried out in frogs in the 1950s. 
C)  In the laboratory, the cloned egg is cultured to an early embryo stage and then transferred to a foster mother. 
D)  The cloned embryo is genetically identical to the foster mother.

Question 17

Imagine you have taken stem cells isolated from umbilical cord blood and successfully differentiated them into cells that look like pancreatic $\beta$-cells. What would you need to know before deciding that they could be implanted into humans to treat diabetes?

Accepted Answer

First, you would need to know that the c

Question 18

Members of the Bcl-2 family of proteins are

Accepted Answer

A)  all caspases. 
B)  either antiapoptotic or proapoptotic. 
C)  all antiapoptotic. 
D)  all proapoptotic. 
A)  all caspases. 
B)  either antiapoptotic or proapoptotic. 
C)  all antiapoptotic. 
D)  all proapoptotic.

Question 19

What is the best rationale for the use of therapeutic cloning to replace defective cells or tissues in a patient?

Accepted Answer

A)  The transplanted cells are identical to those of the recipient who donated the adult nucleus, so complications of immune rejection are avoided. 
B)  Embryos do not have to be destroyed, so ethically there is little controversy. 
C)  It is a very efficient process for generating the tissues that need to be replaced. 
D)  We already know how to fully differentiate the embryonic stem cells into all the major cell types. 
A)  The transplanted cells are identical to those of the recipient who donated the adult nucleus, so complications of immune rejection are avoided. 
B)  Embryos do not have to be destroyed, so ethically there is little controversy. 
C)  It is a very efficient process for generating the tissues that need to be replaced. 
D)  We already know how to fully differentiate the embryonic stem cells into all the major cell types.

Question 20

Apoptosis, or programmed cell death, occurs in all of the following cases except

Accepted Answer

A)  in virus-infected cells. 
B)  in cells damaged by injury. 
C)  in cells with potentially cancer-causing mutations. 
D)  during the formation of human fingers. 
A)  in virus-infected cells. 
B)  in cells damaged by injury. 
C)  in cells with potentially cancer-causing mutations. 
D)  during the formation of human fingers.

What observation in C. elegans suggested that cell death occurs as a specific developmental fate?

Which human disease could potentially be cured with stem cell transplantation therapy?

Which of the following events is not associated with apoptosis?

When fragmented nuclear DNA is visualized by gel electrophoresis following induction of apoptosis, why do the fragments almost always appear as multiples of 200 base pairs?

Which of the following signaling pathways is not important to stem cell physiology?

With the birth of _______, Wilmut and colleagues became the first scientists to produce a successfully cloned mammal by somatic cell nuclear transfer.

Which of the following adult cell types is arrested in G₀?

Why are cells with damaged genomes dangerous and often destroyed?

When two-thirds of the liver of a rat is cut away, what happens to the remaining cells?

How does tumor necrosis factor (TNF) trigger apoptosis?

What is the difference between an initiator caspase and an effector caspase?

Goblet cells and enteroendocrine cells have the same stem cells as absorptive epithelial cells.

Following injury or exercise, _______ cells become activated and repair damaged skeletal muscle.

Programmed cell death plays an important role in development.

Which statement about cloning by somatic cell nuclear transfer is false?

Imagine you have taken stem cells isolated from umbilical cord blood and successfully differentiated them into cells that look like pancreatic $\beta$ -cells. What would you need to know before deciding that they could be implanted into humans to treat diabetes?

Members of the Bcl-2 family of proteins are

What is the best rationale for the use of therapeutic cloning to replace defective cells or tissues in a patient?

Apoptosis, or programmed cell death, occurs in all of the following cases except

An Overview of Cells and Cell Research

Molecules and Membranes

Bioenergetics and Metabolism

Fundamentals of Molecular Biology

Genomics, Proteomics, and Systems Biology

Genes and Genomes

Replication, Maintenance, and Rearrangements of Genomic Dna

RNA Synthesis and Processing

Transcriptional Regulation and Epigenetics

Protein Synthesis, Processing, and Regulation

The Nucleus

Protein Sorting and Transport

Mitochondria, Chloroplasts, and Peroxisomes

The Cytoskeleton and Cell Movement

The Plasma Membrane

Cell Walls, the Extracellular Matrix, and Cell Interactions

Cell Signaling

The Cell Cycle

Cancer

Filters

Exam 19: Cell Death and Cell Renewal

What observation in C. elegans suggested that cell death occurs as a specific developmental fate?

Which human disease could potentially be cured with stem cell transplantation therapy?

Which of the following events is not associated with apoptosis?

When fragmented nuclear DNA is visualized by gel electrophoresis following induction of apoptosis, why do the fragments almost always appear as multiples of 200 base pairs?

Which of the following signaling pathways is not important to stem cell physiology?

With the birth of _______, Wilmut and colleagues became the first scientists to produce a successfully cloned mammal by somatic cell nuclear transfer.

Which of the following adult cell types is arrested in G0?

Why are cells with damaged genomes dangerous and often destroyed?

When two-thirds of the liver of a rat is cut away, what happens to the remaining cells?

How does tumor necrosis factor (TNF) trigger apoptosis?

What is the difference between an initiator caspase and an effector caspase?

Goblet cells and enteroendocrine cells have the same stem cells as absorptive epithelial cells.

Following injury or exercise, _______ cells become activated and repair damaged skeletal muscle.

Programmed cell death plays an important role in development.

Which statement about cloning by somatic cell nuclear transfer is false?

Imagine you have taken stem cells isolated from umbilical cord blood and successfully differentiated them into cells that look like pancreatic β\betaβ -cells. What would you need to know before deciding that they could be implanted into humans to treat diabetes?

Members of the Bcl-2 family of proteins are

What is the best rationale for the use of therapeutic cloning to replace defective cells or tissues in a patient?

Apoptosis, or programmed cell death, occurs in all of the following cases except

An Overview of Cells and Cell Research

Molecules and Membranes

Bioenergetics and Metabolism

Fundamentals of Molecular Biology

Genomics, Proteomics, and Systems Biology

Genes and Genomes

Replication, Maintenance, and Rearrangements of Genomic Dna

RNA Synthesis and Processing

Transcriptional Regulation and Epigenetics

Protein Synthesis, Processing, and Regulation

The Nucleus

Protein Sorting and Transport

Mitochondria, Chloroplasts, and Peroxisomes

The Cytoskeleton and Cell Movement

The Plasma Membrane

Cell Walls, the Extracellular Matrix, and Cell Interactions

Cell Signaling

The Cell Cycle

Cancer

Filters

Which of the following adult cell types is arrested in G₀?

Imagine you have taken stem cells isolated from umbilical cord blood and successfully differentiated them into cells that look like pancreatic $\beta$ -cells. What would you need to know before deciding that they could be implanted into humans to treat diabetes?