Question 1

Which hypothesis of aging involves mitochondria?

Accepted Answer

A)   gene damage by free radicals
B)   whole-body process
C)   extrinsic factors
D)   damage accumulation
E)   external factorsF) A) and E)
G) B) and C)

Question 2

When cells begin to move in the embryo in relation to other cells, this is called

Accepted Answer

A)   cleavage.
B)   growth.
C)   morphogenesis.
D)   differentiation.
E)   fertilization.F) A) and D)
G) A) and C)

Question 3

Which of the following develops into the male genital ducts?

Accepted Answer

A)   epididymis
B)   urogenital groove
C)   cloaca
D)   Mullerian ducts
E)   Wolffian ductsF) A) and B)
G) A) and E)

Question 4

The nervous system develops enough to permit reflex actions during which period of development?

Accepted Answer

A)   pre-embryonic
B)   embryonic, weeks 6-8
C)   fetal, months 3-4
D)   embryonic, weeks 2-3
E)   embryonic, weeks 4-5F) A) and D)
G) All of the above

Question 5

The nervous system is to the ectoderm as the skeleton is to the

Accepted Answer

A)   mesoderm.
B)   endoderm.
C)   chorion.
D)   allantois.
E)   blastula.F) A) and D)
G) D) and E)

Question 6

The first system in the body to become visibly differentiated during development is the

Accepted Answer

A)   digestive system.
B)   cardiovascular system.
C)   respiratory system.
D)   nervous system.
E)   reproductive system.F) C) and D)
G) A) and B)

Question 7

An embryo at the 4-cell stage of development is almost twice the size of an embryo at the 2-cell stage of development.

Accepted Answer

A) True 
 B)False

Question 8

When the uterus begins to contract, it is almost time for the baby to be born.

Accepted Answer

A) True 
 B)False

Question 9

Which of these is associated with pre-embryonic development?

Accepted Answer

A)   morula
B)   embryonic disk
C)   gastrulation
D)   primary germ layers
E)   formation of the umbilical cordF) A) and B)
G) A) and C)

Question 10

Does a woman ovulate during pregnancy? Why or why not?

Accepted Answer

A)   No, because she doesn't have any more follicles in the ovaries.
B)   No, because negative feedback on the hypothalamus prevents new follicles from maturing.
C)   No, because the developing embryo prevents any new blastulas from implanting.
D)   Yes, because the uterine cycle continues to function.
E)   Yes, because the ovarian cycle continues to function.F) B) and C)
G) A) and E)

Question 11

Embryonic development begins with

Accepted Answer

A)   fertilization.
B)   the first cell division.
C)   the development of the blastocyst.
D)   implantation.
E)   gastrulation.F) A) and C)
G) C) and D)

Question 12

Most birth defects are due to the inheritance of an abnormal number of chromosomes.

Accepted Answer

A) True 
 B)False

Question 13

The names of the extraembryonic membranes are derived from their function in animals that produce shelled eggs.

Accepted Answer

A) True 
 B)False

Question 14

Describe the steps of fertilizing an egg cell.

Accepted Answer

1. Sperm makes its way through the coron...

Question 15

Which of the following is not derived from the endoderm?

Accepted Answer

A)   epithelial lining of the digestive tract
B)   epithelial lining of the respiratory tract
C)   glands of the digestive tract
D)   lining of the urinary bladder
E)   urinary systemF) None of the above
G) C) and E)

Question 16

The number of neural cells in the cerebral cortex decreases during the aging process.

Accepted Answer

A) True 
 B)False

Question 17

Once the cortical granules release their enzymes, the corona radiata becomes the fertilization membrane.

Accepted Answer

A) True 
 B)False

Question 18

Which of the following would be considered a poor health practice for a woman planning to get pregnant or already pregnant?

Accepted Answer

A)   updating all vaccinations
B)   treating all sexually transmitted diseases
C)   obtaining more folic acid
D)   eating enough to feed two people
E)   moderate exerciseF) A) and B)
G) C) and D)

Question 19

Which of the following is involved in the prevention of polyspermy?

Accepted Answer

A)   acrosome of the sperm
B)   depolarization of the egg's plasma membrane
C)   fusion of the sperm and egg nucleus
D)   changes within the corona radiata
E)   the number of chromosomes contained within the spermF) A) and E)
G) A) and B)

Question 20

The ________ is the first embryonic membrane to appear, and it is the first site of ________.

Accepted Answer

A)   amnion, umbilical cord formation
B)   yolk sac, placenta development
C)   chorion, neural system development
D)   allantois, amniotic fluid formation
E)   yolk sac, blood cell formationF) A) and B)
G) A) and D)

Exam 18: Development and Aging

When cells begin to move in the embryo in relation to other cells, this is called

Correct AnswerverifiedShow Answer

Which of the following would be considered a poor health practice for a woman planning to get pregnant or already pregnant?

Correct AnswerverifiedShow Answer

The first system in the body to become visibly differentiated during development is the

Correct AnswerverifiedShow Answer

The names of the extraembryonic membranes are derived from their function in animals that produce shelled eggs.

Correct AnswerverifiedShow Answer

Which of the following is involved in the prevention of polyspermy?

Correct AnswerverifiedShow Answer

The ________ is the first embryonic membrane to appear, and it is the first site of ________.

Correct AnswerverifiedShow Answer

An embryo at the 4-cell stage of development is almost twice the size of an embryo at the 2-cell stage of development.

Correct AnswerverifiedShow Answer

Embryonic development begins with

Correct AnswerverifiedShow Answer

Which of the following develops into the male genital ducts?

Correct AnswerverifiedShow Answer

Which hypothesis of aging involves mitochondria?

Correct AnswerverifiedShow Answer

Does a woman ovulate during pregnancy? Why or why not?

Correct AnswerverifiedShow Answer

When the uterus begins to contract, it is almost time for the baby to be born.

Correct AnswerverifiedShow Answer

Which of these is associated with pre-embryonic development?

Correct AnswerverifiedShow Answer

Describe the steps of fertilizing an egg cell.

Correct Answerverified1. Sperm makes its way through the coron...View AnswerShow Answer

Once the cortical granules release their enzymes, the corona radiata becomes the fertilization membrane.

Correct AnswerverifiedShow Answer

The nervous system is to the ectoderm as the skeleton is to the

Correct AnswerverifiedShow Answer

The number of neural cells in the cerebral cortex decreases during the aging process.

Correct AnswerverifiedShow Answer

Most birth defects are due to the inheritance of an abnormal number of chromosomes.

Correct AnswerverifiedShow Answer

Which of the following is not derived from the endoderm?

Correct AnswerverifiedShow Answer

The nervous system develops enough to permit reflex actions during which period of development?

Correct AnswerverifiedShow Answer

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The is the first embryonic membrane to appear, and it is the first site of .

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1. Sperm makes its way through the coron...
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