EMBRYOLOGY FINAL (II) EXAM QUESTIONS WITH COMPLETE SOLUTIONS
GUARANTEED PASS BRAND NEW 2025
T/F One of the most valuable aspects of using "polymerase
chain reaction" (PCR) assay is the ability to express a large
quantity of a single gene without requiring a host during the
process. - ANSWER - >True
T/F Gene expression within the "responder" cell can be altered
by factors from the "inducer" cell and changing the gene code. -
ANSWER - >False
T/F The "Preformationist" group believed that the sperm or egg
carried all the information for a new being in the form of a tiny
adult referred to as homunculus. - ANSWER - >True
T/F August Weismann stated that heritable information is
carried only in the gametes and not in somatic cells which was
known as the "Weismann Barrier". The birth of Dolly the sheep
proved Weismann and his theory to be incorrect. - ANSWER -
>True
T/F Following the stages of early division of the blastomeres,
post-fertilization, the morula is seen forming after the blastula
stage. - ANSWER - >False
,T/F Teratogens are agents which are responsible for disruptions
at the receptor and second messenger system level. - ANSWER
- >False
T/F During "autonomous specification", the cells removed from
the blastomere develop as normal, however the embryo will
lose those structures which would have been formed by the
removed cell types. - ANSWER - >True
T/F The term, Development, describes the physiological and
molecular events that occur during growth and differentiation
of the embryo. - ANSWER - >True
T/F Paracrine and Juxtacrine factors have the ability to bind
directly to segments of DNA in the responding cells without
having first bind to receptors - ANSWER - >False
T/F When looking at the percentage of embryos which
developed normally following nuclear transplant in frogs, a
significant increase in success is more likely to be seen at the
later stages of potency or timing within the embryo - ANSWER -
>False
T/F The potency, or ability of stem cells to differentiate, begins
to decrease and be lost in the later stages of nuclear transfer. -
ANSWER - >True
,T/F Apoptosis is a congenital pathological disease process that
results in loss of "normal" anatomy and therefore loss of
"normal" physiology - ANSWER - >False
T/F In "Permissive Interaction" between an inducer the
responder cell, the responder is already specified but just
requires the proper environment to develop. - ANSWER - >True
T/F One thing that was discovered in the cloning of Dolly the
sheep, is that adult vertebrate somatic cells can only be
pluripotent. - ANSWER - >False
T/F Related to the previous question, in terms of potency,
multipotent stem cells are capable of producing a wider range
of cell types than those that are totipotent. - ANSWER - >False
T/F Enucleated, or anucleated eggs, are those in which the
nucleus has been removed for perhaps experiments where you
are transferring in a donor nucleus. - ANSWER - >True
T/F As the macroscopic events were proven or discredited by
the ability to see microscopically, the concept of
"Preformation" ultimately gave way to "Epigenesis". - ANSWER
- >True
T/F The concept of syncytial specification occurs in the insect
world as the nuclei divides within the egg and spreads
throughout the syncytium. - ANSWER - >True
, T/F The mechanism for similar cells to aggregate during the
formation of tissues requires the presence of cell surface
protein referred to histones. - ANSWER - >False
T/F The theory of "mosaic development" is generally associated
with "autonomous specification". - ANSWER - >True
T/F "Determination" refers to cells that differentiate
autonomously in-vitro and is a reversible process. - ANSWER -
>False
T/F In the case of a human embryo, the presence of the Morula
occurs at approximately 3-4 days after fertilization. - ANSWER -
>True
Hematopoietic and neuronal stem cells are examples of _____
stem cells.
A. Multipotent
B. Unipotent
C. Pluripotent
D. Totipotent
E. Hemapotent - ANSWER - >A. Multipotent
The death or anomalies to the eggs of amphibious species by
UV irradiation may be prevented by a melanin type product
known as what?
A. Mycosporin
GUARANTEED PASS BRAND NEW 2025
T/F One of the most valuable aspects of using "polymerase
chain reaction" (PCR) assay is the ability to express a large
quantity of a single gene without requiring a host during the
process. - ANSWER - >True
T/F Gene expression within the "responder" cell can be altered
by factors from the "inducer" cell and changing the gene code. -
ANSWER - >False
T/F The "Preformationist" group believed that the sperm or egg
carried all the information for a new being in the form of a tiny
adult referred to as homunculus. - ANSWER - >True
T/F August Weismann stated that heritable information is
carried only in the gametes and not in somatic cells which was
known as the "Weismann Barrier". The birth of Dolly the sheep
proved Weismann and his theory to be incorrect. - ANSWER -
>True
T/F Following the stages of early division of the blastomeres,
post-fertilization, the morula is seen forming after the blastula
stage. - ANSWER - >False
,T/F Teratogens are agents which are responsible for disruptions
at the receptor and second messenger system level. - ANSWER
- >False
T/F During "autonomous specification", the cells removed from
the blastomere develop as normal, however the embryo will
lose those structures which would have been formed by the
removed cell types. - ANSWER - >True
T/F The term, Development, describes the physiological and
molecular events that occur during growth and differentiation
of the embryo. - ANSWER - >True
T/F Paracrine and Juxtacrine factors have the ability to bind
directly to segments of DNA in the responding cells without
having first bind to receptors - ANSWER - >False
T/F When looking at the percentage of embryos which
developed normally following nuclear transplant in frogs, a
significant increase in success is more likely to be seen at the
later stages of potency or timing within the embryo - ANSWER -
>False
T/F The potency, or ability of stem cells to differentiate, begins
to decrease and be lost in the later stages of nuclear transfer. -
ANSWER - >True
,T/F Apoptosis is a congenital pathological disease process that
results in loss of "normal" anatomy and therefore loss of
"normal" physiology - ANSWER - >False
T/F In "Permissive Interaction" between an inducer the
responder cell, the responder is already specified but just
requires the proper environment to develop. - ANSWER - >True
T/F One thing that was discovered in the cloning of Dolly the
sheep, is that adult vertebrate somatic cells can only be
pluripotent. - ANSWER - >False
T/F Related to the previous question, in terms of potency,
multipotent stem cells are capable of producing a wider range
of cell types than those that are totipotent. - ANSWER - >False
T/F Enucleated, or anucleated eggs, are those in which the
nucleus has been removed for perhaps experiments where you
are transferring in a donor nucleus. - ANSWER - >True
T/F As the macroscopic events were proven or discredited by
the ability to see microscopically, the concept of
"Preformation" ultimately gave way to "Epigenesis". - ANSWER
- >True
T/F The concept of syncytial specification occurs in the insect
world as the nuclei divides within the egg and spreads
throughout the syncytium. - ANSWER - >True
, T/F The mechanism for similar cells to aggregate during the
formation of tissues requires the presence of cell surface
protein referred to histones. - ANSWER - >False
T/F The theory of "mosaic development" is generally associated
with "autonomous specification". - ANSWER - >True
T/F "Determination" refers to cells that differentiate
autonomously in-vitro and is a reversible process. - ANSWER -
>False
T/F In the case of a human embryo, the presence of the Morula
occurs at approximately 3-4 days after fertilization. - ANSWER -
>True
Hematopoietic and neuronal stem cells are examples of _____
stem cells.
A. Multipotent
B. Unipotent
C. Pluripotent
D. Totipotent
E. Hemapotent - ANSWER - >A. Multipotent
The death or anomalies to the eggs of amphibious species by
UV irradiation may be prevented by a melanin type product
known as what?
A. Mycosporin
