Question 1

Suppose Dr. Barnes is a fertility specialist who studies the sex of recently fertilized ova. If her research population included all fertilized ova conceived in a population, and if she found that 1,000 of these zygotes were female, she should expect that the population would also include _____ male zygotes.

Accepted Answer

A)   960
B)   1,000
C)   1,040
D)   1,250

Question 2

Which of the following mothers is at the greatest risk of having a miscarriage?

Accepted Answer

A)   Anne, who is 20
B)   Judy, who is 28
C)   Lucretia, who is 35
D)   Mary, who is 42

Question 3

Infants who are born prematurely are at higher risk for having learning disabilities and hyperactivity.

Accepted Answer

A) True 
 B)False

Question 4

Rex describes a period of the lifespan as "the time when primitive organ systems mature and become functional." The period he is describing would correctly be identified as:

Accepted Answer

A)   the germinal period
B)   the fetal period
C)   the embryonic period
D)   the viability period

Question 5

Exposure to toxins during weeks 20 to 36 during a pregnancy would be most likely to result in defects in which of the body's organs?

Accepted Answer

A)   the brain
B)   the ears
C)   the heart
D)   the genitalia (sex organs)

Question 6

Which type of genetic information is NOT included in a one-celled fertilized egg?

Accepted Answer

A)   genetic instructions for whether the sex of the child will be male or female
B)   genetic instructions for how tall the child will likely be at adulthood
C)   genetic instructions for eye color
D)   All genetic instructions are present from the point of fertilization on.

Question 7

When infants reach the age of viability at 24 weeks, they have about a ______ % chance of surviving outside of the uterus if given high-quality medical treatment.

Accepted Answer

A)   90
B)   70
C)   50
D)   10

Question 8

The embryonic period of prenatal development occurs during which trimester(s) ?

Accepted Answer

A)   the first trimester
B)   the second trimester
C)   the third trimester
D)   the second and third trimesters

Question 9

While observing the birth of his daughter, Mr. Johnson sees that she will be born buttocks first. He would correctly describe this type of birth as:

Accepted Answer

A)   posterior presentation
B)   breech presentation
C)   normal presentation
D)   Apgar presentation

Question 10

Dizygotic twins have identical DNA.

Accepted Answer

A) True 
 B)False

Question 11

Fertilization normally takes place:

Accepted Answer

A)   in the uterus
B)   in the vagina
C)   in the ovary from which the egg is released
D)   in the fallopian tube

Question 12

When infants are held upright with their feet against a surface and are moved forward, they appear to walk in a coordinated way. This reflex is referred to as:

Accepted Answer

A)   palmar reflex
B)   stepping reflex
C)   Babinski reflex
D)   walking reflex

Question 13

Suppose 3 mothers were accidentally exposed to a teratogen during their pregnancies. Who would have the lowest risk for having a child with some sort of birth defect?

Accepted Answer

A)   Abbey, who is exposed during the germinal period of prenatal development
B)   Brittany, who is exposed during the embryonic period of prenatal development
C)   Whitney, who is exposed during the fetal period of prenatal development
D)   All 3 women would have approximately equal chances of having a child affected by the teratogen.

Question 14

Exposure to toxins during weeks 3 to 5 during a pregnancy would be most likely to result in defects in which of the body's organs?

Accepted Answer

A)   the brain
B)   the ears
C)   the heart
D)   the genitalia (sexual organs)

Question 15

Suppose a friend calls you and tells you that she has had a miscarriage during the fourth month of her pregnancy. Technically, her miscarriage would be termed:

Accepted Answer

A)   spontaneous abortion
B)   term abortion
C)   mid-term abortion
D)   developmental abortion

Question 16

During which period of prenatal development do most major structures, such as the heart, develop in rudimentary form?

Accepted Answer

A)   embryonic period
B)   fetal period
C)   germinal period
D)   zygotic period

Question 17

When Braxton-Hicks contractions occur, they are considered to be part of:

Accepted Answer

A)   false labor
B)   initial labor
C)   delivery
D)   afterbirth

Question 18

About what percent of U.S. women today use some type of reproductive technology to become pregnant?

Accepted Answer

A)   0.1%
B)   1%
C)   4%
D)   15%

Question 19

Which of the following is NOT considered to be a survival reflex present in newborns?

Accepted Answer

A)   breathing
B)   rooting
C)   sucking
D)   kicking

Question 20

Kangaroo care is generally recommended when:

Accepted Answer

A)   the infant has no biological mother to care for it
B)   the mother is addicted to drugs
C)   the baby is born with HIV
D)   the baby is low birth weight

Exam 3: Prenatal Development and Childbirth

When infants are held upright with their feet against a surface and are moved forward, they appear to walk in a coordinated way. This reflex is referred to as:

Correct Answer
verified

The embryonic period of prenatal development occurs during which trimester(s) ?

Correct Answer
verified

Exposure to toxins during weeks 3 to 5 during a pregnancy would be most likely to result in defects in which of the body's organs?

Correct Answer
verified

Which type of genetic information is NOT included in a one-celled fertilized egg?

Correct Answer
verified

Correct Answer
verified

Exposure to toxins during weeks 20 to 36 during a pregnancy would be most likely to result in defects in which of the body's organs?

Correct Answer
verified

When infants reach the age of viability at 24 weeks, they have about a ______ % chance of surviving outside of the uterus if given high-quality medical treatment.

Correct Answer
verified

During which period of prenatal development do most major structures, such as the heart, develop in rudimentary form?

Correct Answer
verified

Dizygotic twins have identical DNA.

Correct Answer
verified

Kangaroo care is generally recommended when:

Correct Answer
verified

Which of the following mothers is at the greatest risk of having a miscarriage?

Correct Answer
verified

Fertilization normally takes place:

Correct Answer
verified

Suppose 3 mothers were accidentally exposed to a teratogen during their pregnancies. Who would have the lowest risk for having a child with some sort of birth defect?

Correct Answer
verified

Which of the following is NOT considered to be a survival reflex present in newborns?

Correct Answer
verified

While observing the birth of his daughter, Mr. Johnson sees that she will be born buttocks first. He would correctly describe this type of birth as:

Correct Answer
verified

About what percent of U.S. women today use some type of reproductive technology to become pregnant?

Correct Answer
verified

Infants who are born prematurely are at higher risk for having learning disabilities and hyperactivity.

Correct Answer
verified

Suppose a friend calls you and tells you that she has had a miscarriage during the fourth month of her pregnancy. Technically, her miscarriage would be termed:

Correct Answer
verified

When Braxton-Hicks contractions occur, they are considered to be part of:

Correct Answer
verified

Rex describes a period of the lifespan as "the time when primitive organ systems mature and become functional." The period he is describing would correctly be identified as:

Correct Answer
verified

Exam 3: Prenatal Development and Childbirth

When infants are held upright with their feet against a surface and are moved forward, they appear to walk in a coordinated way. This reflex is referred to as:

Correct AnswerverifiedShow Answer

The embryonic period of prenatal development occurs during which trimester(s) ?

Correct AnswerverifiedShow Answer

Exposure to toxins during weeks 3 to 5 during a pregnancy would be most likely to result in defects in which of the body's organs?

Correct AnswerverifiedShow Answer

Which type of genetic information is NOT included in a one-celled fertilized egg?

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

Exposure to toxins during weeks 20 to 36 during a pregnancy would be most likely to result in defects in which of the body's organs?

Correct AnswerverifiedShow Answer

When infants reach the age of viability at 24 weeks, they have about a ______ % chance of surviving outside of the uterus if given high-quality medical treatment.

Correct AnswerverifiedShow Answer

During which period of prenatal development do most major structures, such as the heart, develop in rudimentary form?

Correct AnswerverifiedShow Answer

Dizygotic twins have identical DNA.

Correct AnswerverifiedShow Answer

Kangaroo care is generally recommended when:

Correct AnswerverifiedShow Answer

Which of the following mothers is at the greatest risk of having a miscarriage?

Correct AnswerverifiedShow Answer

Fertilization normally takes place:

Correct AnswerverifiedShow Answer

Suppose 3 mothers were accidentally exposed to a teratogen during their pregnancies. Who would have the lowest risk for having a child with some sort of birth defect?

Correct AnswerverifiedShow Answer

Which of the following is NOT considered to be a survival reflex present in newborns?

Correct AnswerverifiedShow Answer

While observing the birth of his daughter, Mr. Johnson sees that she will be born buttocks first. He would correctly describe this type of birth as:

Correct AnswerverifiedShow Answer

About what percent of U.S. women today use some type of reproductive technology to become pregnant?

Correct AnswerverifiedShow Answer

Infants who are born prematurely are at higher risk for having learning disabilities and hyperactivity.

Correct AnswerverifiedShow Answer

Suppose a friend calls you and tells you that she has had a miscarriage during the fourth month of her pregnancy. Technically, her miscarriage would be termed:

Correct AnswerverifiedShow Answer

When Braxton-Hicks contractions occur, they are considered to be part of:

Correct AnswerverifiedShow Answer

Rex describes a period of the lifespan as "the time when primitive organ systems mature and become functional." The period he is describing would correctly be identified as:

Correct AnswerverifiedShow Answer

Correct Answer
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