Question 1

The chorion ________ and the amnion ________.

Accepted Answer

A)  is the outer protective membrane around the embryo; is the site where an embryo is implanted into the uterus
B)  projects into the endometrium and helps form the placenta; is a membrane that encircles a developing embryo
C)  is the site from which primary germ layers develop; is the site from which secondary germ layers develop
D)  is the part of the blastocyst that is not the inner cell mass; is the inner cell massE) C) and D)
F) None of the above

Question 2

The structure that surrounds the cell membrane of the secondary oocyte is the ________.

Accepted Answer

The answer of The structure that surrounds the cell membrane...

Question 3

Fertilization usually occurs in the

Accepted Answer

A)  ovary.
B)  uterine tube.
C)  uterus.
D)  vagina.E) A) and C)
F) C) and D)

Question 4

Upon examination of a zygote, a developmental biologist discovers that it possesses 47 chromosomes. What does this indicate?

Accepted Answer

A)  The zygote resulted from polyspermy (multiple fertilizations of the same oocyte) by two sperm cells
B)  The zygote is a normal, healthy diploid zygote
C)  Either the sperm or the egg received an extra chromosome as the result of a meiotic error
D)  Either the sperm or the egg had one less chromosome than normal as the result of a meiotic errorE) None of the above
F) A) and B)

Question 5

Centenarians are

Accepted Answer

A)  people who live past 90.
B)  people in the military.
C)  people who live past 100 years.
D)  people who die just before their 100ᵗʰ birthdays.E) None of the above
F) A) and B)

Question 6

Dizygotic twins result from

Accepted Answer

A)  one egg cell and one sperm cell.
B)  one egg cell and two sperm cells.
C)  two egg cells and one sperm cell.
D)  two egg cells and two sperm cells.E) None of the above
F) A) and B)

Question 7

Some women prolong breastfeeding or lactation in general as a form of birth control. How would extension of lactation be effective in preventing pregnancy?

Accepted Answer

A)  Lactation stimulates production of placental lactinogen, which is a pregnancy hormone and prevents the corpus luteum from degrading and advancing the reproductive cycle.
B)  Prolactin is the hormone that corresponds with lactation. It also inhibits ovulation at the pituitary gland level, so as long as lactation is actively occurring, ovulation is prevented.
C)  Breastfeeding stimulates production of oxytocin, which causes the endometrium to slough off and exit the body in a menstrual period, preventing implantation of a zygote.
D)  The physical stimulation of breastfeeding causes high levels of progesterone to be produced, which cause secretions in the reproductive tract that are hostile to sperm.E) B) and C)
F) A) and B)

Question 8

The period of development during which the contents of a zygote are divided into increasingly smaller cells is called ________.

Accepted Answer

The answer of The period of development during which the...

Question 9

Human life span is ________ years.

Accepted Answer

A)  80
B)  90
C)  100
D)  120E) All of the above
F) A) and B)

Question 10

Some factors that help to stimulate the newborn's first breath are increasing CO₂, decreasing pH, decreasing O₂, decreasing body temperature, and mechanical stimulation.

Accepted Answer

A) True 
 B)False

Question 11

Preimplantation genetic diagnosis works because

Accepted Answer

A)  the donor and recipient are siblings and therefore they share most of their genetic material.
B)  each cell in a human at any stage can give rise to a separate individual.
C)  the missing genes are injected into cell nuclei of the recipient.
D)  a cell can be removed from an 8-celled human embryo and the remaining 7 cells can continue developing.E) All of the above
F) A) and B)

Question 12

Human prenatal development takes ________ weeks.

Accepted Answer

A)  28
B)  32
C)  38
D)  44E) All of the above
F) A) and B)

Question 13

Aging-related changes include shrinking of the prostate in men and enlargement of the breasts in women.

Accepted Answer

A) True 
 B)False

Question 14

The process of growing old is called ________.

Accepted Answer

The answer of The process of growing old is called...

Question 15

Progesterone in semen stimulates the movement of sperm cells.

Accepted Answer

A) True 
 B)False

Question 16

The term newborn refers to the period from birth through ________, whereas the term infant refers to the period from ________.

Accepted Answer

A)  3 months; 3 months to 6 months
B)  the first four weeks; the first month to 1 year
C)  one week; the second week through the second year
D)  the first year; the first year to the second yearE) A) and C)
F) B) and C)

Question 17

The slender projections that grow out from the trophoblast into the uterine wall are called ________.

Accepted Answer

The answer of The slender projections that grow out from...

Question 18

The major body parts derived from mesoderm are the

Accepted Answer

A)  nervous system and sense organs.
B)  muscle tissue, bone tissue, and bone marrow.
C)  epidermis, hair, nails, and glands of skin.
D)  respiratory tract, urinary bladder, and urethra.E) C) and D)
F) None of the above

Question 19

The hormones that maintain the uterine wall during the last 5 to 6 months of pregnancy are

Accepted Answer

A)  FSH and LH.
B)  human chorionic gonadotropin and synthetic estrogen.
C)  placental lactogen and relaxin.
D)  placental estrogen and progesterone.E) A) and B)
F) A) and C)

Question 20

A researcher engineers a deletion in the genome of sperm cell DNA that inhibits production of an enzyme in the sperm cell membrane. The researcher then adds the sperm to a culture dish with a secondary oocyte, along with chemicals to guide the sperm to the oocyte. Upon observation, it is found that the sperm fails to penetrate the corona radiata of the oocyte. What enzyme has been deleted from the sperm membrane?

Accepted Answer

A)  Hyaluronidase
B)  Juno
C)  Catalase
D)  AcetylcholinesteraseE) All of the above
F) A) and B)

Exam 23: Pregnancy, Growth, and Development

The chorion and the amnion .

Correct Answer
verified

The hormones that maintain the uterine wall during the last 5 to 6 months of pregnancy are

Correct Answer
verified

Human prenatal development takes ________ weeks.

Correct Answer
verified

Some women prolong breastfeeding or lactation in general as a form of birth control. How would extension of lactation be effective in preventing pregnancy?

Correct Answer
verified

Human life span is ________ years.

Correct Answer
verified

The period of development during which the contents of a zygote are divided into increasingly smaller cells is called ________.

Correct Answer
verified

The major body parts derived from mesoderm are the

Correct Answer
verified

Correct Answer
verified

The term newborn refers to the period from birth through , whereas the term infant refers to the period from .

Correct Answer
verified

Progesterone in semen stimulates the movement of sperm cells.

Correct Answer
verified

The structure that surrounds the cell membrane of the secondary oocyte is the ________.

Correct Answer
verified

The slender projections that grow out from the trophoblast into the uterine wall are called ________.

Correct Answer
verified

Some factors that help to stimulate the newborn's first breath are increasing CO₂, decreasing pH, decreasing O₂, decreasing body temperature, and mechanical stimulation.

Correct Answer
verified

Aging-related changes include shrinking of the prostate in men and enlargement of the breasts in women.

Correct Answer
verified

Preimplantation genetic diagnosis works because

Correct Answer
verified

Dizygotic twins result from

Correct Answer
verified

Upon examination of a zygote, a developmental biologist discovers that it possesses 47 chromosomes. What does this indicate?

Correct Answer
verified

Fertilization usually occurs in the

Correct Answer
verified

The process of growing old is called ________.

Correct Answer
verified

Centenarians are

Correct Answer
verified

Exam 23: Pregnancy, Growth, and Development

The chorion ________ and the amnion ________.

Correct AnswerverifiedShow Answer

The hormones that maintain the uterine wall during the last 5 to 6 months of pregnancy are

Correct AnswerverifiedShow Answer

Human prenatal development takes ________ weeks.

Correct AnswerverifiedShow Answer

Some women prolong breastfeeding or lactation in general as a form of birth control. How would extension of lactation be effective in preventing pregnancy?

Correct AnswerverifiedShow Answer

Human life span is ________ years.

Correct AnswerverifiedShow Answer

The period of development during which the contents of a zygote are divided into increasingly smaller cells is called ________.

Correct AnswerverifiedShow Answer

The major body parts derived from mesoderm are the

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

The term newborn refers to the period from birth through ________, whereas the term infant refers to the period from ________.

Correct AnswerverifiedShow Answer

Progesterone in semen stimulates the movement of sperm cells.

Correct AnswerverifiedShow Answer

The structure that surrounds the cell membrane of the secondary oocyte is the ________.

Correct AnswerverifiedShow Answer

The slender projections that grow out from the trophoblast into the uterine wall are called ________.

Correct AnswerverifiedShow Answer

Some factors that help to stimulate the newborn's first breath are increasing CO₂, decreasing pH, decreasing O₂, decreasing body temperature, and mechanical stimulation.

Correct AnswerverifiedShow Answer

Aging-related changes include shrinking of the prostate in men and enlargement of the breasts in women.

Correct AnswerverifiedShow Answer

Preimplantation genetic diagnosis works because

Correct AnswerverifiedShow Answer

Dizygotic twins result from

Correct AnswerverifiedShow Answer

Upon examination of a zygote, a developmental biologist discovers that it possesses 47 chromosomes. What does this indicate?

Correct AnswerverifiedShow Answer

Fertilization usually occurs in the

Correct AnswerverifiedShow Answer

The process of growing old is called ________.

Correct AnswerverifiedShow Answer

Centenarians are

Correct AnswerverifiedShow Answer

The chorion and the amnion .

Correct Answer
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The term newborn refers to the period from birth through , whereas the term infant refers to the period from .

Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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