Question 1

Which of the following is the organ of exchange between the mother and fetus?

Accepted Answer

A)  chorion
B)  amnion
C)  placenta
D)  yolk sac
E)  allantoisF) A) and C)
G) B) and D)

Question 2

Which feature is not associated with aging of the musculoskeletal system?

Accepted Answer

A)  a decrease in the muscle mass starting in the 20s or 30s for men
B)  a two-inch decrease in height by the time we reach age 80
C)  a reduction in the size and number of muscle fibers
D)  compression of the vertebrae
E)  All of these are features associated with aging.F) A) and B)
G) All of the above

Question 3

Which of the following structures is NOT one of the extraembryonic membranes associated with the human embryo?

Accepted Answer

A)  chorion
B)  amnion
C)  placenta
D)  yolk sac
E)  allantoisF) C) and D)
G) A) and B)

Question 4

The human embryo becomes a fetus at the end of the second month of gestation.

Accepted Answer

A) True 
 B)False

Question 5

Development of the human embryo's heart begins in the ________ week.

Accepted Answer

A)  16th
B)  3rd
C)  1st
D)  24th
E)  6thF) A) and D)
G) A) and C)

Question 6

Which of the following serves as the first site of blood formation in the embryo?

Accepted Answer

A)  chorion
B)  amnion
C)  placenta
D)  yolk sac
E)  allantoisF) B) and E)
G) A) and E)

Question 7

The formation of the lens of the vertebrate eye from a skin layer in contact with an outgrowth of the embryonic brain is an example of

Accepted Answer

A)  cellular aggregation.
B)  induction.
C)  morphogenesis.
D)  gastrulation.
E)  neurulation.F) None of the above
G) B) and C)

Question 8

As humans age,we tend to see a decrease in the function of various body systems.A decrease in which system will lead to problems in regulating body temperature?

Accepted Answer

A)  integumentary system
B)  cardiovascular system
C)  digestive system
D)  respiratory system
E)  excretory systemF) A) and D)
G) None of the above

Question 9

One of the earliest indications of cell differentiation is cellular movement.

Accepted Answer

A) True 
 B)False

Question 10

When discussing the morphogenesis of Drosophila melanogaster,a homeotic gene codes for

Accepted Answer

A)  proteins that bind to regulatory regions of DNA.
B)  proteins that determine anteroposterior polarity.
C)  proteins that determine which genes are turned on.
D)  proteins that bind to regulatory regions of DNA and proteins that determine which genes are turned on.
E)  All of the choices are correct.F) D) and E)
G) C) and D)

Question 11

If the acrosome cap of the sperm were to fall off,what would happen during fertilization?

Accepted Answer

A)  The zona pellucida would not be weakened by the enzymes found in the acrosome cap of the sperm.
B)  The corona radiata would not be weakened by the fatty acids found in the acrosome cap of the sperm.
C)  The zona pellucida would depolarize at a faster rate than if the acrosome cap was present.
D)  None of the answer choices would occur.
E)  All of the answer choices would occur.F) A) and D)
G) A) and C)

Question 12

Which of the following variables would support the "damage accumulation theory of aging"?

Accepted Answer

A)  Harmful metabolites accumulate over our lifetime.
B)  Protein fibers become cross-linked as we age.
C)  Poor diet and exposure to the sun lead to cellular damage.
D)  None of these support the damage accumulation theory of aging.
E)  All of these support the damage accumulation theory of aging.F) B) and C)
G) None of the above

Question 13

What is the correct order of steps of morphogenesis in Drosophila melanogaster? 
a.Gap genes divide the body into broad regions
B.Establishment of anterior / posterior axes
C.Homeotic genes determine which body parts arise from each region
D.Pair-rule genes are activated in order to develop a preliminary segmentation pattern

Accepted Answer

A)  b - a - d - c
B)  a - d - c - b
C)  b - a - c - d
D)  a - b - c - d
E)  a - d - b - cF) None of the above
G) C) and E)

Question 14

The proper order of embryonic development is

Accepted Answer

A)  cleavage-morula-blastula-gastrula.
B)  morula-cleavage-blastula-gastrula.
C)  blastula-cleavage-morula-gastrula.
D)  gastrula-cleavage-blastula-morula.E) B) and C)
F) A) and D)

Question 15

Indicate the proper order of events that occur in fertilization.

Accepted Answer

a.Sperm cover the surface of the egg and...

Question 16

In what process does a fertilized egg undergo cell division without further growth?

Accepted Answer

A)  cleavage
B)  gastrulation
C)  differentiation
D)  morphogenesis
E)  implantationF) B) and C)
G) C) and D)

Question 17

The notochord develops in which stage of embryonic development?

Accepted Answer

A)  gastrulation
B)  neurulation
C)  blastulation
D)  cleavageE) A) and B)
F) All of the above

Question 18

The neural tube of vertebrates develops during morphogenesis of the nervous system by the

Accepted Answer

A)  folding of ectoderm tissue.
B)  migration of mesoderm cells.
C)  fusion of ectoderm and mesoderm.
D)  contraction of the endoderm away from the mesoderm.
E)  extension of endoderm into a thin spinal column.F) None of the above
G) B) and C)

Question 19

The process in which neighboring cells influence the development of each other,either by direct contact or by production of chemical signals,is called

Accepted Answer

A)  neurulation.
B)  gastrulation.
C)  induction.
D)  maternal determinants.
E)  homeotic pattern formation.F) A) and E)
G) A) and C)

Question 20

The amnion surrounds the embryo and bathes it in a protective fluid.

Accepted Answer

A) True 
 B)False

Exam 42: Animal Development and Aging

If the acrosome cap of the sperm were to fall off,what would happen during fertilization?

Correct Answer
verified

The amnion surrounds the embryo and bathes it in a protective fluid.

Correct Answer
verified

Development of the human embryo's heart begins in the ________ week.

Correct Answer
verified

The notochord develops in which stage of embryonic development?

Correct Answer
verified

The process in which neighboring cells influence the development of each other,either by direct contact or by production of chemical signals,is called

Correct Answer
verified

Which of the following serves as the first site of blood formation in the embryo?

Correct Answer
verified

The formation of the lens of the vertebrate eye from a skin layer in contact with an outgrowth of the embryonic brain is an example of

Correct Answer
verified

The neural tube of vertebrates develops during morphogenesis of the nervous system by the

Correct Answer
verified

Indicate the proper order of events that occur in fertilization.

Correct Answer
verified
a.Sperm cover the surface of the egg and...
View Answer

In what process does a fertilized egg undergo cell division without further growth?

Correct Answer
verified

Correct Answer
verified

When discussing the morphogenesis of Drosophila melanogaster,a homeotic gene codes for

Correct Answer
verified

The human embryo becomes a fetus at the end of the second month of gestation.

Correct Answer
verified

One of the earliest indications of cell differentiation is cellular movement.

Correct Answer
verified

The proper order of embryonic development is

Correct Answer
verified

Which feature is not associated with aging of the musculoskeletal system?

Correct Answer
verified

Which of the following variables would support the "damage accumulation theory of aging"?

Correct Answer
verified

Which of the following is the organ of exchange between the mother and fetus?

Correct Answer
verified

Which of the following structures is NOT one of the extraembryonic membranes associated with the human embryo?

Correct Answer
verified

As humans age,we tend to see a decrease in the function of various body systems.A decrease in which system will lead to problems in regulating body temperature?

Correct Answer
verified

Exam 42: Animal Development and Aging

If the acrosome cap of the sperm were to fall off,what would happen during fertilization?

Correct AnswerverifiedShow Answer

The amnion surrounds the embryo and bathes it in a protective fluid.

Correct AnswerverifiedShow Answer

Development of the human embryo's heart begins in the ________ week.

Correct AnswerverifiedShow Answer

The notochord develops in which stage of embryonic development?

Correct AnswerverifiedShow Answer

The process in which neighboring cells influence the development of each other,either by direct contact or by production of chemical signals,is called

Correct AnswerverifiedShow Answer

Which of the following serves as the first site of blood formation in the embryo?

Correct AnswerverifiedShow Answer

The formation of the lens of the vertebrate eye from a skin layer in contact with an outgrowth of the embryonic brain is an example of

Correct AnswerverifiedShow Answer

The neural tube of vertebrates develops during morphogenesis of the nervous system by the

Correct AnswerverifiedShow Answer

Indicate the proper order of events that occur in fertilization.

Correct Answerverifieda.Sperm cover the surface of the egg and...View AnswerShow Answer

In what process does a fertilized egg undergo cell division without further growth?

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

When discussing the morphogenesis of Drosophila melanogaster,a homeotic gene codes for

Correct AnswerverifiedShow Answer

The human embryo becomes a fetus at the end of the second month of gestation.

Correct AnswerverifiedShow Answer

One of the earliest indications of cell differentiation is cellular movement.

Correct AnswerverifiedShow Answer

The proper order of embryonic development is

Correct AnswerverifiedShow Answer

Which feature is not associated with aging of the musculoskeletal system?

Correct AnswerverifiedShow Answer

Which of the following variables would support the "damage accumulation theory of aging"?

Correct AnswerverifiedShow Answer

Which of the following is the organ of exchange between the mother and fetus?

Correct AnswerverifiedShow Answer

Which of the following structures is NOT one of the extraembryonic membranes associated with the human embryo?

Correct AnswerverifiedShow Answer

As humans age,we tend to see a decrease in the function of various body systems.A decrease in which system will lead to problems in regulating body temperature?

Correct AnswerverifiedShow Answer

Correct Answer
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verified
a.Sperm cover the surface of the egg and...
View Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
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Correct Answer
verified

Correct Answer
verified

Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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