Question 1

The period from conception until birth is

Accepted Answer

A)   the prenatal period.
B)   the germinal period.
C)   the embryonic period.
D)   the fetal period.
E)   the conceptual period.F) A) and E)
G) None of the above

Question 2

The clinical age of the unborn child is calculated from

Accepted Answer

A)   ovulation.
B)   conception.
C)   the last menstrual period.
D)   fourteen days after the last menstrual period.
E)   fourteen days before the last menstrual period.F) None of the above
G) C) and D)

Question 3

What term means that both alleles are the same?

Accepted Answer

A)   locus
B)   alleles
C)   homozygous
D)   heterozygous
E)   karyotypeF) C) and D)
G) A) and C)

Question 4

The process of meiosis will _____ as the gametes are produced.

Accepted Answer

A)   cut the chromosome number by 1/3
B)   cut the chromosome number by 1/2
C)   double the chromosome number
D)   not change the chromosome number
E)   triple the chromosome numberF) B) and D)
G) C) and E)

Question 5

What genetic disorder is characterized by lack of skin, hair, eye coloration?

Accepted Answer

A)   albinism
B)   sickle-cell disease
C)   hemophilia
D)   Down syndrome
E)   achondroplasiaF) B) and E)
G) A) and B)

Question 6

Which of the following statements about the syncytiotrophoblast is false?

Accepted Answer

A)   It forms the developing embryo.
B)   It is composed of a non-dividing, multinucleated cell.
C)   It is nonantigenic, so that it triggers no immune response.
D)   It invades the maternal tissues that compose the endometrium of the uterus.
E)   It forms lacunae.F) C) and E)
G) A) and D)

Question 7

In fetal circulation, the blood containing the highest amount of oxygen is found in the

Accepted Answer

A)   aorta.
B)   umbilical vein.
C)   ductus arteriosus.
D)   umbilical arteries.
E)   heart.F) B) and D)
G) D) and E)

Question 8

-What does "E" represent on the diagram?

Accepted Answer

A)   fertilization
B)   morula
C)   blastocyst
D)   implantation
E)   ovulationF) A) and E)
G) D) and E)

Question 9

If the zygote splits into two separate cells,

Accepted Answer

A)   identical twins result.
B)   fraternal twins result.
C)   dizygotic twinning occurs.
D)   both cells die.
E)   paternal twins result.F) B) and D)
G) A) and B)

Question 10

The cytotrophoblast

Accepted Answer

A)   forms the chorionic villi.
B)   replaces the syncytiotrophoblast.
C)   remains throughout development.
D)   forms branches that protrude into the amniotic cavity.
E)   is not an embryonic part of the placenta.F) B) and E)
G) B) and D)

Question 11

-What does "C" represent on the diagram?

Accepted Answer

A)   fertilization
B)   morula
C)   blastocyst
D)   implantation
E)   ovulationF) A) and E)
G) B) and C)

Question 12

Segments of mesoderm that will form muscles are

Accepted Answer

A)   mesonephros.
B)   mandibular processes.
C)   neural tube.
D)   secondary palate.
E)   somites.F) None of the above
G) A) and C)

Question 13

Which of the following is an example of incomplete dominance?

Accepted Answer

A)   minor thalassemia
B)   major thalassemia
C)   beta thalassemia
D)   polymorphism
E)   ABO blood groupsF) C) and D)
G) B) and E)

Question 14

APGAR scores are used to

Accepted Answer

A)   evaluate a newborn's weight.
B)   assess a newborn's physiological condition.
C)   measure a newborn's genetic state.
D)   determine the developmental age of the infant.
E)   measure the infant.F) C) and E)
G) B) and D)

Question 15

Which of the following statements concerning musculoskeletal system development is true?

Accepted Answer

A)   Skeletal muscles develop from crest cells.
B)   Myoblasts produce somites.
C)   The vertebral column develops from somite-derived mesoderm.
D)   Enlargement of muscles after birth is due to an increase in the number of muscle fibers.
E)   Ossification ends before birth.F) A) and E)
G) A) and B)

Question 16

The hormone responsible for milk production is

Accepted Answer

A)   estrogen.
B)   progesterone.
C)   oxytocin.
D)   prolactin.
E)   FSH.F) All of the above
G) A) and C)

Question 17

An embryonic cell that contains the potential to give rise to any tissue type is called a/an

Accepted Answer

A)   differentiated cell.
B)   multipotent cell.
C)   pluripotent cell.
D)   omnipotent cell.
E)   totipotent cell.F) A) and C)
G) C) and E)

Question 18

Which of the following will cause contractions of uterine smooth muscle?

Accepted Answer

A)   increasing levels of progesterone
B)   decreasing levels of estrogen
C)   decreasing levels of oxytocin
D)   decreasing uterine stretch
E)   increasing levels of oxytocinF) A) and B)
G) C) and D)

Question 19

An embryonic cell that has the potential to develop into a wide range of tissues is called a/an

Accepted Answer

A)   differentiated cell.
B)   multipotent cell.
C)   pluripotent cell.
D)   omnipotent cell.
E)   totipotent cell.F) B) and E)
G) C) and D)

Question 20

Alcohol ingestion by a pregnant woman can cause birth defects in her baby; alcohol is a(an)

Accepted Answer

A)   carcinogen.
B)   mutagen.
C)   teratogen.
D)   oncogene.
E)   haptogen.F) A) and E)
G) C) and D)

Exam 29: Development, Growth, Aging, and Genetics

Which of the following will cause contractions of uterine smooth muscle?

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The clinical age of the unborn child is calculated from

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Alcohol ingestion by a pregnant woman can cause birth defects in her baby; alcohol is a(an)

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In fetal circulation, the blood containing the highest amount of oxygen is found in the

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Which of the following statements concerning musculoskeletal system development is true?

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Which of the following statements about the syncytiotrophoblast is false?

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If the zygote splits into two separate cells,

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What genetic disorder is characterized by lack of skin, hair, eye coloration?

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An embryonic cell that has the potential to develop into a wide range of tissues is called a/an

Correct AnswerverifiedShow Answer

What term means that both alleles are the same?

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APGAR scores are used to

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The cytotrophoblast

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Segments of mesoderm that will form muscles are

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Which of the following is an example of incomplete dominance?

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The hormone responsible for milk production is

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-What does "E" represent on the diagram?

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The process of meiosis will _____ as the gametes are produced.

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An embryonic cell that contains the potential to give rise to any tissue type is called a/an

Correct AnswerverifiedShow Answer

The period from conception until birth is

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-What does "C" represent on the diagram?

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