Question 1

One reason that pregnant women's metabolic rates change is that the placenta secretes

Accepted Answer

A)   human chorionic gonadotropin, which stimulates metabolism of glucose and raises metabolic rate.
B)   human chorionic thyrotropin, which stimulates the thyroid gland and raises metabolic rate.
C)   human placental lactogen, which stimulates glycolysis and raises metabolic rate.
D)   human chorionic somatomammotropin, which inhibits fatty acid metabolism and lowers metabolic rate.
E)   prolactin, which lowers metabolic rate so that nutrients can be stored in milk.F) A) and D)
G) B) and D)

Question 2

Describe the main functions of the placenta.

Accepted Answer

The placenta is responsible fo...

Question 3

Cells within the embryoblast have the ability to differentiate into any type of cell within the body.

Accepted Answer

A) True 
 B)False

Question 4

Changes in the size of the uterus during pregnancy are due to

Accepted Answer

A)   hypertrophy but not hyperplasia.
B)   hyperplasia but not hypertrophy.
C)   both hypertrophy and hyperplasia.D) All of the above
E) A) and B)

Question 5

After ovulation, the oocyte

Accepted Answer

A)   waits passively for a sperm to penetrate.
B)   releases negative ions that create an electrical gradient that all sperm swim toward.
C)   releases chemotaxic signals to attract sperm to its location.
D)   propels itself toward seminal fluid by calcium-dependent kinesis.E) B) and C)
F) A) and C)

Question 6

Which structure is an important site for early blood cell formation and is the first of the extraembryonic membranes to form?

Accepted Answer

A)   Amnion
B)   Yolk sac
C)   Chorion
D)   Zona pellucidaE) All of the above
F) B) and D)

Question 7

After childbirth, lochia lasts for

Accepted Answer

A)   3-4 days.
B)   2-3 weeks.
C)   3-5 months.D) B) and C)
E) All of the above

Question 8

Individuals who are described as heterozygous have different

Accepted Answer

A)   genotypes than the predominant genotype.
B)   genes for one trait on several chromosomes.
C)   alleles for a particular trait.
D)   parents who displayed two different phenotypes.E) A) and D)
F) C) and D)

Question 9

The trophoblast is located at the

Accepted Answer

A)   periphery of the blastocyst.
B)   center of the blastocyst.
C)   periphery of the morula.
D)   center of the morula.
E)   center of the embryoblast.F) All of the above
G) B) and C)

Question 10

Blood vessel growth within the uterus is promoted by the hormone ________.

Accepted Answer

The answer of Blood vessel growth within the uterus is...

Question 11

The uterine enlargement that occurs during the first 10 weeks of pregnancy is mostly the result of

Accepted Answer

A)   growth of the conceptus from a zygote to a fetus.
B)   amniotic fluid production as well as growth of uterine muscle and the placenta.C) A) and B)
D) undefined

Question 12

The pre-embryonic period ends when

Accepted Answer

A)   a morula is formed.
B)   the zygote undergoes cleavage.
C)   the blastocyst implants in the uterus.
D)   the morula develops a trophoblast.E) A) and B)
F) A) and C)

Question 13

During pregnancy, the levels of CRH and aldosterone within a mother's blood decline.

Accepted Answer

A) True 
 B)False

Question 14

The process by which a blastocyst embeds within the uterine endometrium is known as

Accepted Answer

A)   cleavage.
B)   morulation.
C)   implantation.
D)   capacitation.
E)   the acrosome reaction.F) B) and D)
G) B) and E)

Question 15

During fertilization, the nuclei of the sperm and the ovum are referred to as ________, before they come together and fuse to form a single nucleus.

Accepted Answer

The answer of During fertilization, the nuclei of the sperm...

Question 16

Fetal alcohol syndrome involves a disorder that alters the

Accepted Answer

A)   sequence of base pairs in the genes of the fetus.
B)   structural integrity of the chromosomes of the fetus.
C)   expression of genes in the fetus.
D)   gametes of the fetus.E) B) and C)
F) C) and D)

Question 17

In the late stages of pregnancy, estrogen stimulates increased

Accepted Answer

A)   release of hCG.
B)   secretion of atrial natriuretic factor by the heart.
C)   growth of the corpus luteum.
D)   production of oxytocin receptors in the uterus.E) B) and C)
F) B) and D)

Question 18

The second trimester of a pregnancy includes months

Accepted Answer

A)   2-5
B)   4-6
C)   5-7
D)   5-9E) A) and B)
F) A) and C)

Question 19

Sperm undergo a process of conditioning known as ________ after they arrive in the female reproductive tract.

Accepted Answer

The answer of Sperm undergo a process of conditioning known...

Question 20

Consider a mother with normal vision who has a son with red-green color blindness. The mother was a "carrier" of the affected gene, as she had a normal phenotype but

Accepted Answer

A)   two recessive alleles.
B)   two dominant alleles.
C)   one dominant and one recessive allele.
D)   a codominant set of alleles.
E)   an incompletely penetrating genotype.F) A) and B)
G) A) and C)

Exam 29: Development, Pregnancy, and Heredity

After childbirth, lochia lasts for

Correct AnswerverifiedShow Answer

The second trimester of a pregnancy includes months

Correct AnswerverifiedShow Answer

In the late stages of pregnancy, estrogen stimulates increased

Correct AnswerverifiedShow Answer

After ovulation, the oocyte

Correct AnswerverifiedShow Answer

Individuals who are described as heterozygous have different

Correct AnswerverifiedShow Answer

Consider a mother with normal vision who has a son with red-green color blindness. The mother was a "carrier" of the affected gene, as she had a normal phenotype but

Correct AnswerverifiedShow Answer

Changes in the size of the uterus during pregnancy are due to

Correct AnswerverifiedShow Answer

Which structure is an important site for early blood cell formation and is the first of the extraembryonic membranes to form?

Correct AnswerverifiedShow Answer

Sperm undergo a process of conditioning known as ________ after they arrive in the female reproductive tract.

Correct AnswerverifiedShow Answer

During pregnancy, the levels of CRH and aldosterone within a mother's blood decline.

Correct AnswerverifiedShow Answer

One reason that pregnant women's metabolic rates change is that the placenta secretes

Correct AnswerverifiedShow Answer

The trophoblast is located at the

Correct AnswerverifiedShow Answer

Fetal alcohol syndrome involves a disorder that alters the

Correct AnswerverifiedShow Answer

Describe the main functions of the placenta.

Correct AnswerverifiedThe placenta is responsible fo...View AnswerShow Answer

Blood vessel growth within the uterus is promoted by the hormone ________.

Correct AnswerverifiedShow Answer

The pre-embryonic period ends when

Correct AnswerverifiedShow Answer

The uterine enlargement that occurs during the first 10 weeks of pregnancy is mostly the result of

Correct AnswerverifiedShow Answer

The process by which a blastocyst embeds within the uterine endometrium is known as

Correct AnswerverifiedShow Answer

During fertilization, the nuclei of the sperm and the ovum are referred to as ________, before they come together and fuse to form a single nucleus.

Correct AnswerverifiedShow Answer

Cells within the embryoblast have the ability to differentiate into any type of cell within the body.

Correct AnswerverifiedShow Answer

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The placenta is responsible fo...
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