Question 1

Explain how a totipotent stem cell line would be developed.

Accepted Answer

Stem cell lines are created by removing cells from an embryo at the blastocyst stage of development. The cells would need to come from the 20 to 30 cells that make up the inner cell mass. The cells are then cultured and kept alive in a laboratory.

Question 2

Which of the following areas is not known to contain stem cells?

Accepted Answer

A)   the skin
B)   bone marrow
C)   the umbilical cord
D)   muscle D

Question 3

A cell with the ability to differentiate into several different types of cells is considered ________.

Accepted Answer

A)   totipotent
B)   unipotent
C)   multipotent
D)   pluripotent C

Question 4

As stem cell research rapidly developed, it became a political and ethical issue. Describe how the ethical and political approach toward stem cell research has changed in the past decade.

Accepted Answer

The answer of As stem cell research rapidly developed, it...

Question 5

Dolly the sheep ________.

Accepted Answer

A)   was the first mother who gave birth to a cloned sheep
B)   received its nuclear DNA from the foster mother
C)   received its mother's nucleus from her bone marrow
D)   was the first mammal cloned from an adult cell

Question 6

Which one of the following correctly describes the order of stem cells from the lowest degree of flexibility to the highest degree of flexibility?

Accepted Answer

A)   unipotent 
B)   multipotent 
C)   pluripotent 
D)   unipotent < multipotent < totipotent < pluripotent

Question 7

Which is not true about the value of 3-D printing in regenerating organs?

Accepted Answer

A)   It is used to create the scaffolding to hold the tissue.
B)   It is used to apply the cells to the scaffolding.
C)   It is used to create complicated organs.
D)   All of these are true.

Question 8

Most people assume that cloning refers only to a whole organism, or reproductive cloning. Explain how therapeutic cloning is different from reproductive cloning.

Accepted Answer

The answer of Most people assume that cloning refers only...

Question 9

At which point or stage would the majority of cells in the embryo no longer be stem cells?

Accepted Answer

A)   the pre-embryo stage
B)   in the blastocyst
C)   after the organs start to develop
D)   A large number of stem cells would exist in all these stages.

Question 10

Which statement best describes the difference between therapeutic and reproductive cloning?

Accepted Answer

A)   Therapeutic cloning involves producing medications, whereas reproductive cloning is used for in vitro fertilization procedures.
B)   Therapeutic cloning produces cells that are not genetically identical to their source, whereas reproductive cloning produces cells that are genetically identical to their source.
C)   Therapeutic cloning is used to produce stem cells that can be coerced into differentiating into a specific cell type, whereas reproductive cloning is used to produce organisms identical to what they were cloned from.
D)   There really aren't any differences between therapeutic and reproductive cloning.

Question 11

Which of the following is not needed in a reproductive cloning procedure?

Accepted Answer

A)   an egg cell
B)   a diploid cell
C)   a sperm cell
D)   a surrogate mother

Question 12

Stem cell lines are developed from ________.

Accepted Answer

A)   multipotent cells
B)   inner cell mass cells from a blastocyst
C)   cells collected from umbilical cords
D)   cells collected from amniotic fluid

Question 13

Which lists the stem cells from the least to the highest degree of flexibility?

Accepted Answer

A)   embryonic stem cells 
B)   embryonic stem cells 
C)   adult stem cells 
D)   adult stem cells < embryonic stem cells < zygote

Question 14

Describe several potential applications for embryonic stem cell research.

Accepted Answer

The answer of Describe several potential applications for embryonic stem...

Question 15

Which of the following creates pluripotent stem cells without the need to destroy an embryo?

Accepted Answer

A)   embryonic stem cell removal from unused embryos at fertility clinics
B)   retrieval of stem cells from umbilical cord blood
C)   retrieval of stem cells from adult bone marrow
D)   induced pluripotent stem cells

Question 16

Before stem cell research was such a prominent topic in the news, many people were misinformed about embryonic stem cell research. Many people thought that this form of stem cell research could be completed only by collecting stem cells from electively aborted fetuses. Explain specifically where embryonic stem cells come from when used for research and why these cells would not typically be found in aborted fetuses.

Accepted Answer

The answer of Before stem cell research was such a...

Question 17

How is a stem cell different from a "normal" somatic cell? (Use a liver cell as an example.)

Accepted Answer

The answer of How is a stem cell different from...

Exam 28: Stem Cellsa Repair Kit for the Body