Question 1

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) B) and D)

Question 2

Which of the following stages of embryonic development consists of only two layers of cells?

Accepted Answer

A)   morula
B)   blastula
C)   early gastrula
D)   late gastrulaE) A) and D)
F) B) and D)

Question 3

A fetus born at twenty-four weeks has a chance of surviving, although it may have

Accepted Answer

A)   immature lungs and breathing difficulties.
B)   kidneys that fail to function.
C)   an incomplete digestive system.
D)   problems with brain development.
E)   an incomplete heart and circulatory system.F) A) and B)
G) None of the above

Question 4

Which structure is not associated with the development of the central nervous system in vertebrates?

Accepted Answer

A)   notochord
B)   neural plate
C)   neural tube
D)   ectodermE) None of the above
F) All of the above

Question 5

Development of the neural system is characterized by

Accepted Answer

A)   cell division and growth in size.
B)   cells becoming specialized in structure and function.
C)   body parts being shaped and patterned into a specific form.
D)   All of the choices are correct.
E)   None of the choices are correct.F) D) and E)
G) A) and D)

Question 6

As we 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 our temperature?

Accepted Answer

A)   integumentary system
B)   cardiovascular system
C)   digestive system
D)   respiratory system
E)   excretory systemF) B) and C)
G) A) and D) A

Question 7

The trophoblast will provide nourishment for the embryo and give rise to the placenta.

Accepted Answer

A) True 
 B)False

Question 8

The notochord develops in which stage of embryonic development?

Accepted Answer

A)   gastrulation
B)   neurulation
C)   blastulation
D)   cleavageE) C) and D)
F) B) and C)

Question 9

Differentiation is characterized by

Accepted Answer

A)   cellular division and growth.
B)   cells becoming specialized in structure and function.
C)   body parts being shaped and patterned into a specific form.
D)   All of the choices are correct.
E)   None of the choices are correct.F) A) and D)
G) B) and D)

Question 10

The phenomenon of apoptosis or cell death, as it relates to morphogenesis in Drosphila melanogaster,

Accepted Answer

A)   is a mechanism present in every cell that occurs when an inhibitory protein is inactivated.
B)   occurs when the cellular machinery simply wears out and the cell dies from being unable to continue vital processes.
C)   occurs when the ability of the cell to repair DNA mutations finally fails.
D)   is a disease phenomenon and cell death is always a bad trait.
E)   is not yet understood but probably involves the failure of the homeobox to correctly control development.F) A) and B)
G) A) and C)

Question 11

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

Accepted Answer

A) True 
 B)False

Question 12

Which stage would show the development of the ectoderm and endoderm germ layers?

Accepted Answer

A)   early gastrulation
B)   neurulation
C)   blastulation
D)   late gastrulationE) A) and D)
F) A) and C) A

Question 13

List the correct order of steps of morphogenesis in Drosophila melanogaster.

Accepted Answer

a. Gap genes divide the body into broad ...

Question 14

A decrease in the function of the cardiovascular system due to aging can cause a decreased ability of the body to metabolize drugs.

Accepted Answer

A) True 
 B)False

Question 15

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 D)
G) A) and C)

Question 16

The coelomic cavity is derived from the

Accepted Answer

A)   blastocoel.
B)   folding of the neural tube.
C)   splitting of the mesoderm.
D)   elimination of the yolk sac nutrients.
E)   space left after organs develop.F) None of the above
G) A) and E) C

Question 17

A series of events occur during fertilization. Place the following events in the proper order in which they occur. a)  The "slowblock" occurs. b)  A single nuclear envelope surrounds both sperm and egg pronuclei. c)  The acrosomes of sperm release digestive enzymes that allow the sperm to pass through the zona pellucida to the egg plasma membrane. d)  Sperm cover the surface of the egg and secrete enzymes that help weaken the corona radiata. e)  Pronuclei are formed. f)  The "fast block" occurs. g)  Microvilli bring the entire sperm into the egg. h)  Sperm squeeze through the corona radiata and bind to the zona pellucida.

Accepted Answer

A)   a, e, b, d, f, c, g, h
B)   d, h, c, f, a, g, e, b
C)   d, b, g, a, f, c, e, h
D)   f, a, d, h, c, g, e, b
E)   e, d, h, c, a, f, b, gF) B) and D)
G) A) and E)

Question 18

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

Accepted Answer

A) True 
 B)False

Question 19

At _____ weeks, the fetal heartbeat can be heard through a stethoscope.

Accepted Answer

A)   4
B)   25
C)   16
D)   12
E)   30F) A) and E)
G) None of the above

Question 20

What body systems may be impacted if a mother drinks alcohol during pregnancy and causes developmental problems to the endoderm?

Accepted Answer

A)   The epithelial lining of the digestive and respiratory systems may not be as functional as they should.
B)   The epithelial lining of the digestive and reproductive systems may not be as functional as they should.
C)   The epidermis and the epithelial lining of the oral cavity may not be as functional as they should.
D)   The outer layers of the digestive and respiratory systems may not be as functional as they should.E) C) and D)
F) All of the above

Exam 42: Animal Development

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

Correct Answer
verified

Which of the following stages of embryonic development consists of only two layers of cells?

Correct Answer
verified

A fetus born at twenty-four weeks has a chance of surviving, although it may have

Correct Answer
verified

Which structure is not associated with the development of the central nervous system in vertebrates?

Correct Answer
verified

Development of the neural system is characterized by

Correct Answer
verified

As we 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 our temperature?

Correct Answer
verified
A

The trophoblast will provide nourishment for the embryo and give rise to the placenta.

Correct Answer
verified

The notochord develops in which stage of embryonic development?

Correct Answer
verified

Differentiation is characterized by

Correct Answer
verified

The phenomenon of apoptosis or cell death, as it relates to morphogenesis in Drosphila melanogaster,

Correct Answer
verified

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

Correct Answer
verified

Which stage would show the development of the ectoderm and endoderm germ layers?

Correct Answer
verified
A

List the correct order of steps of morphogenesis in Drosophila melanogaster.

Correct Answer
verified
a. Gap genes divide the body into broad ...
View Answer

A decrease in the function of the cardiovascular system due to aging can cause a decreased ability of the body to metabolize drugs.

Correct Answer
verified

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

Correct Answer
verified

The coelomic cavity is derived from the

Correct Answer
verified
C

Correct Answer
verified

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

Correct Answer
verified

At _____ weeks, the fetal heartbeat can be heard through a stethoscope.

Correct Answer
verified

What body systems may be impacted if a mother drinks alcohol during pregnancy and causes developmental problems to the endoderm?

Correct Answer
verified

Exam 42: Animal Development

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

Correct AnswerverifiedShow Answer

Which of the following stages of embryonic development consists of only two layers of cells?

Correct AnswerverifiedShow Answer

A fetus born at twenty-four weeks has a chance of surviving, although it may have

Correct AnswerverifiedShow Answer

Which structure is not associated with the development of the central nervous system in vertebrates?

Correct AnswerverifiedShow Answer

Development of the neural system is characterized by

Correct AnswerverifiedShow Answer

As we 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 our temperature?

Correct AnswerverifiedA

The trophoblast will provide nourishment for the embryo and give rise to the placenta.

Correct AnswerverifiedShow Answer

The notochord develops in which stage of embryonic development?

Correct AnswerverifiedShow Answer

Differentiation is characterized by

Correct AnswerverifiedShow Answer

The phenomenon of apoptosis or cell death, as it relates to morphogenesis in Drosphila melanogaster,

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

Which stage would show the development of the ectoderm and endoderm germ layers?

Correct AnswerverifiedA

List the correct order of steps of morphogenesis in Drosophila melanogaster.

Correct Answerverifieda. Gap genes divide the body into broad ...View AnswerShow Answer

A decrease in the function of the cardiovascular system due to aging can cause a decreased ability of the body to metabolize drugs.

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

The coelomic cavity is derived from the

Correct AnswerverifiedC

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

At _____ weeks, the fetal heartbeat can be heard through a stethoscope.

Correct AnswerverifiedShow Answer

What body systems may be impacted if a mother drinks alcohol during pregnancy and causes developmental problems to the endoderm?

Correct AnswerverifiedShow Answer

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A

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A

Correct Answer
verified
a. Gap genes divide the body into broad ...
View Answer

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C

Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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