Question 1

If a woman has scar tissue completely blocking both of her oviducts about halfway down their length, which event would be impossible without medical intervention?

Accepted Answer

A)  Fertilization 
B)  Ovulation 
C)  Buildup of the endometrium 
D)  Menstruation 
E)  Formation of the corpus luteum 
A)  Fertilization 
B)  Ovulation 
C)  Buildup of the endometrium 
D)  Menstruation 
E)  Formation of the corpus luteum

Question 2

Which hormone would decline immediately after a bilateral oophorectomy (surgical removal of both ovaries)?

Accepted Answer

A)  Luteinizing hormone (LH) 
B)  Gonadotropin-releasing hormone (GnRH) 
C)  Follicle-stimulating hormone (FSH) 
D)  Prolactin 
E)  Estrogen 
A)  Luteinizing hormone (LH) 
B)  Gonadotropin-releasing hormone (GnRH) 
C)  Follicle-stimulating hormone (FSH) 
D)  Prolactin 
E)  Estrogen

Question 3

Choose the correct pairing between cell type and function.

Accepted Answer

A)  Sertoli cell: produces testosterone 
B)  Spermatogonium: undergoes meiosis to produce haploid primary spermatocytes 
C)  Leydig cell: produces inhibin 
D)  Leydig cell: produces male sex hormones 
E)  Spermatid: undergoes meiosis to produce spermatozoa 
A)  Sertoli cell: produces testosterone 
B)  Spermatogonium: undergoes meiosis to produce haploid primary spermatocytes 
C)  Leydig cell: produces inhibin 
D)  Leydig cell: produces male sex hormones 
E)  Spermatid: undergoes meiosis to produce spermatozoa

Question 4

Following a vasectomy,

Accepted Answer

A)  there is a decrease in testosterone production in the male. 
B)  sperm are no longer produced. 
C)  sperm cannot reach the urethra and are reabsorbed. 
D)  males experience decreased sexual response. 
E)  males experience an increase in erectile dysfunction. 
A)  there is a decrease in testosterone production in the male. 
B)  sperm are no longer produced. 
C)  sperm cannot reach the urethra and are reabsorbed. 
D)  males experience decreased sexual response. 
E)  males experience an increase in erectile dysfunction.

Question 5

There is great variety in how animals reproduce sexually.Of the events listed, which is essential for creating diploid offspring that are genetically different from the parents?

Accepted Answer

A)  Spawning 
B)  Germ cells proliferating by mitosis 
C)  Fertilization 
D)  Mating 
E)  Guiding sperm to eggs with species specific attractants 
A)  Spawning 
B)  Germ cells proliferating by mitosis 
C)  Fertilization 
D)  Mating 
E)  Guiding sperm to eggs with species specific attractants

Question 6

If the seminal vesicles in a human male are defective, the

Accepted Answer

A)  man will make functional sperm but be unable to ejaculate. 
B)  man's sperm will lack functional flagella. 
C)  fluid needed to lubricate the man's urethra for easier sperm travel will be defective. 
D)  man's semen will lack the fructose fuel needed for the sperm to swim. 
E)  man's Leydig cells will not make the testosterone required to stimulate spermatogenesis. 
A)  man will make functional sperm but be unable to ejaculate. 
B)  man's sperm will lack functional flagella. 
C)  fluid needed to lubricate the man's urethra for easier sperm travel will be defective. 
D)  man's semen will lack the fructose fuel needed for the sperm to swim. 
E)  man's Leydig cells will not make the testosterone required to stimulate spermatogenesis.

Question 7

A physician is discussing methods of contraception with a married couple.The husband and wife are both 35 years old, they have two children, and they have decided that their family is complete.The woman also had two difficult pregnancies and has learned that a third pregnancy could pose a risk to her health.Which method would the physician be likely to recommend to this couple?

Accepted Answer

A)  Tubal ligation 
B)  Vasectomy 
C)  Condom 
D)  Intrauterine device 
E)  Spermicidal jelly 
A)  Tubal ligation 
B)  Vasectomy 
C)  Condom 
D)  Intrauterine device 
E)  Spermicidal jelly

Question 8

Which are the first haploid germ cells produced in spermatogenesis?

Accepted Answer

A)  Sperm 
B)  Spermatogonia 
C)  Spermatids 
D)  Primary spermatocytes 
E)  Secondary spermatocytes 
A)  Sperm 
B)  Spermatogonia 
C)  Spermatids 
D)  Primary spermatocytes 
E)  Secondary spermatocytes

Question 9

Of the methods listed, which is the most effective form of birth control?

Accepted Answer

A)  Vasectomy 
B)  Condom 
C)  Intrauterine device 
D)  Rhythm method 
E)  Birth control pill 
A)  Vasectomy 
B)  Condom 
C)  Intrauterine device 
D)  Rhythm method 
E)  Birth control pill

Question 10

Refer to the figure showing ICSI.   Under which condition would this form of assisted reproductive technology be used?

Accepted Answer

A)  Oocyte lacks a nucleus 
B)  Sperm lacks a tail 
C)  Genetic analysis is necessary to avoid passing on a genetic defect 
D)  Oocyte is unable to complete second meiotic division 
E)  Sperm is diploid but lacks an acrosome 
A)  Oocyte lacks a nucleus 
B)  Sperm lacks a tail 
C)  Genetic analysis is necessary to avoid passing on a genetic defect 
D)  Oocyte is unable to complete second meiotic division 
E)  Sperm is diploid but lacks an acrosome

Question 11

One of the first indications that a woman is pregnant is that she misses her monthly menstrual period.This is the result of

Accepted Answer

A)  hormones secreted by the zygote following fertilization. 
B)  the arrival of the blastocyst in the uterus. 
C)  the secretion of luteinizing hormone (LH) by the corpus luteum once the embryo implants. 
D)  the secretion of human chorionic gonadotropin (hCG) by the blastocyst once it implants. 
E)  the maintenance of the corpus luteum by estrogen and progesterone secreted by the embryo once it implants. 
A)  hormones secreted by the zygote following fertilization. 
B)  the arrival of the blastocyst in the uterus. 
C)  the secretion of luteinizing hormone (LH) by the corpus luteum once the embryo implants. 
D)  the secretion of human chorionic gonadotropin (hCG) by the blastocyst once it implants. 
E)  the maintenance of the corpus luteum by estrogen and progesterone secreted by the embryo once it implants.

Question 12

Which statement about the male reproductive system in humans is true?

Accepted Answer

A)  Leydig cells are target cells for follicle-stimulating hormone (FSH). 
B)  The anterior pituitary stimulates the hypothalamus to secrete follicle-stimulating hormone (FSH) and luteinizing hormone (LH). 
C)  Sertoli cells are target cells for testosterone. 
D)  Spermatogenesis requires production of testosterone by Sertoli cells. 
E)  Inhibin, released by Sertoli cells, inhibits production of luteinizing hormone (LH). 
A)  Leydig cells are target cells for follicle-stimulating hormone (FSH). 
B)  The anterior pituitary stimulates the hypothalamus to secrete follicle-stimulating hormone (FSH) and luteinizing hormone (LH). 
C)  Sertoli cells are target cells for testosterone. 
D)  Spermatogenesis requires production of testosterone by Sertoli cells. 
E)  Inhibin, released by Sertoli cells, inhibits production of luteinizing hormone (LH).

Question 13

Which is a primary sexual structure in human males?

Accepted Answer

A)  Penis 
B)  Glans penis 
C)  Testis 
D)  Ejaculatory duct 
E)  Prostate gland 
A)  Penis 
B)  Glans penis 
C)  Testis 
D)  Ejaculatory duct 
E)  Prostate gland

Question 14

Choose the correct order of events in sea urchin fertilization.

Accepted Answer

A)  Acrosomal reaction, slow block to polyspermy, fast block to polyspermy 
B)  Formation of the acrosomal process, acrosomal reaction, fast block to polyspermy 
C)  Fast block to polyspermy, acrosomal reaction, slow block to polyspermy 
D)  Acrosomal reaction, sperm organelles enter egg cytoplasm, fusion of egg and sperm plasma membranes, fast block to polyspermy 
E)  Acrosomal reaction, formation of the acrosomal process, fusion of egg and sperm plasma membranes, formation of the fertilization cone 
A)  Acrosomal reaction, slow block to polyspermy, fast block to polyspermy 
B)  Formation of the acrosomal process, acrosomal reaction, fast block to polyspermy 
C)  Fast block to polyspermy, acrosomal reaction, slow block to polyspermy 
D)  Acrosomal reaction, sperm organelles enter egg cytoplasm, fusion of egg and sperm plasma membranes, fast block to polyspermy 
E)  Acrosomal reaction, formation of the acrosomal process, fusion of egg and sperm plasma membranes, formation of the fertilization cone

Question 15

Which statement about reproductive technologies is true?

Accepted Answer

A)  During artificial insemination, a physician places sperm and eggs into the female's reproductive tract. 
B)  During intracytoplasmic sperm injection, a sperm is injected directly into the cytoplasm of an egg that is soon to be released from the ovary. 
C)  In vitro fertilization has resulted in just over 5,000 babies since its introduction in the 1970s. 
D)  Intracytoplasmic sperm injection is useful when sperm cannot penetrate an egg. 
E)  Artificial insemination is a method commonly used for humans but has yet to be used in livestock production. 
A)  During artificial insemination, a physician places sperm and eggs into the female's reproductive tract. 
B)  During intracytoplasmic sperm injection, a sperm is injected directly into the cytoplasm of an egg that is soon to be released from the ovary. 
C)  In vitro fertilization has resulted in just over 5,000 babies since its introduction in the 1970s. 
D)  Intracytoplasmic sperm injection is useful when sperm cannot penetrate an egg. 
E)  Artificial insemination is a method commonly used for humans but has yet to be used in livestock production.

Question 16

Of the contraceptive methods listed, which has the lowest failure rate?

Accepted Answer

A)  Hormone containing vaginal ring 
B)  Rhythm method 
C)  Diaphragm 
D)  Coitus interruptus 
E)  Condom 
A)  Hormone containing vaginal ring 
B)  Rhythm method 
C)  Diaphragm 
D)  Coitus interruptus 
E)  Condom

Question 17

Which statement represents the principal difference between the uterine cycle of humans and the cycles of other mammals?

Accepted Answer

A)  The uterine cycles of other mammals occur if fertilization occurs, whereas the uterine cycle of humans occurs if fertilization does not occur. 
B)  The uterine cycle of humans occurs if fertilization occurs, whereas the uterine cycles of most mammals occur if fertilization does not occur. 
C)  The uterine cycles of most other mammals lack menstruation. 
D)  The uterine cycles of most other mammals do not involve any changes to the uterine lining. 
E)  Peaks of progesterone in the uterine cycles of most other mammals correspond to periods of enhanced sexual receptivity referred to as estrus or "heat." 
A)  The uterine cycles of other mammals occur if fertilization occurs, whereas the uterine cycle of humans occurs if fertilization does not occur. 
B)  The uterine cycle of humans occurs if fertilization occurs, whereas the uterine cycles of most mammals occur if fertilization does not occur. 
C)  The uterine cycles of most other mammals lack menstruation. 
D)  The uterine cycles of most other mammals do not involve any changes to the uterine lining. 
E)  Peaks of progesterone in the uterine cycles of most other mammals correspond to periods of enhanced sexual receptivity referred to as estrus or "heat."

Question 18

If a person develops an estrogen-secreting Leydig cell tumor, that person most likely will

Accepted Answer

A)  require surgical removal of both ovaries. 
B)  lack nurse cells that provide nutrients to germ cells. 
C)  be masculinized. 
D)  have a palpable lump in the scrotum. 
E)  undergo premature menopause. 
A)  require surgical removal of both ovaries. 
B)  lack nurse cells that provide nutrients to germ cells. 
C)  be masculinized. 
D)  have a palpable lump in the scrotum. 
E)  undergo premature menopause.

Question 19

Following implantation, human chorionic gonadotropin secreted by the _______ keeps the corpus luteum functional.

Accepted Answer

The answer of Following implantation, human chorionic gonadotropin secreted by...

Question 20

At which stage does the secondary oocyte resume meiosis in humans?

Accepted Answer

A)  During prenatal development 
B)  At birth 
C)  When it is fertilized 
D)  At menopause 
E)  At puberty 
A)  During prenatal development 
B)  At birth 
C)  When it is fertilized 
D)  At menopause 
E)  At puberty

Exam 42: Animal Reproduction

If a woman has scar tissue completely blocking both of her oviducts about halfway down their length, which event would be impossible without medical intervention?

Which hormone would decline immediately after a bilateral oophorectomy (surgical removal of both ovaries)?

Choose the correct pairing between cell type and function.

Following a vasectomy,

There is great variety in how animals reproduce sexually.Of the events listed, which is essential for creating diploid offspring that are genetically different from the parents?

If the seminal vesicles in a human male are defective, the

Which are the first haploid germ cells produced in spermatogenesis?

Of the methods listed, which is the most effective form of birth control?

Refer to the figure showing ICSI. Under which condition would this form of assisted reproductive technology be used?

One of the first indications that a woman is pregnant is that she misses her monthly menstrual period.This is the result of

Which statement about the male reproductive system in humans is true?

Which is a primary sexual structure in human males?

Choose the correct order of events in sea urchin fertilization.

Which statement about reproductive technologies is true?

Of the contraceptive methods listed, which has the lowest failure rate?

Which statement represents the principal difference between the uterine cycle of humans and the cycles of other mammals?

If a person develops an estrogen-secreting Leydig cell tumor, that person most likely will

Following implantation, human chorionic gonadotropin secreted by the _______ keeps the corpus luteum functional.

At which stage does the secondary oocyte resume meiosis in humans?

Studying Life

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Proteins, Carbohydrates, and Lipids

Nucleic Acids and the Origin of Life

Cells: the Working Units of Life

Cell Membranes

Cell Communication and Multicellularity

Energy, Enzymes, and Metabolism

Pathways That Harvest Chemical Energy

Photosynthesis: Energy From Sunlight

The Cell Cycle and Cell Division

Inheritance, Genes, and Chromosomes

Dna and Its Role in Heredity

From Dna to Protein: Gene Expression

Gene Mutation and Molecular Medicine

Regulation of Gene Expression

Genomes

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Mechanisms of Evolution

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Speciation

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The Origin and Diversification of Eukaryotes

Plants Without Seeds: From Water to Land

The Evolution of Seed Plants

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