Question 1

What is the function of Sertoli cells?

Accepted Answer

To regulate sperm pr

Question 2

Gonadotropin-releasing hormone (GnRH)

Accepted Answer

A)  stimulates the release of FSH and LH. 
B)  is produced by the pituitary. 
C)  is secreted when there is a high level of progesterone in the blood. 
D)  is made by the ovaries. 
E)  causes endometrial cells to multiply. 
A)  stimulates the release of FSH and LH. 
B)  is produced by the pituitary. 
C)  is secreted when there is a high level of progesterone in the blood. 
D)  is made by the ovaries. 
E)  causes endometrial cells to multiply.

Question 3

A___________ is a sperm-killing chemical that is more effective as a contraceptive when used in combination with a condom or diaphragm.

Accepted Answer

The answer of A___________ is a sperm-killing chemical that is...

Question 4

In which respect do spermatogenesis and oogenesis differ?

Accepted Answer

A)  The number of gametes produced is different. 
B)  The number of chromosomes in gametes is different. 
C)  The number of meiotic divisions is different. 
D)  Spermatogenesis occurs in the epididymis, whereas oogenesis occurs in the ovary. 
A)  The number of gametes produced is different. 
B)  The number of chromosomes in gametes is different. 
C)  The number of meiotic divisions is different. 
D)  Spermatogenesis occurs in the epididymis, whereas oogenesis occurs in the ovary.

Question 5

In humans, fertilization normally occurs in the

Accepted Answer

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

Question 6

Sea stars prey on clams. Clam fishermen used to cut up sea stars and throw the parts back into the ocean in order to protect the clam beds they fished. Within months, the beds were crawling with even more sea stars, and there were almost no clams. Why, in hindsight, was cutting up the sea stars not such a good idea?

Accepted Answer

A)  Sea stars have the ability to regenerate new individuals from body parts. 
B)  Sea stars do not eat clams. 
C)  This allowed sea stars to spawn more easily. 
D)  Cutting up sea stars stimulates spawning of sea stars in the immediate vicinity. 
E)  This allowed the sea stars to reproduce parthenogenetically. 
A)  Sea stars have the ability to regenerate new individuals from body parts. 
B)  Sea stars do not eat clams. 
C)  This allowed sea stars to spawn more easily. 
D)  Cutting up sea stars stimulates spawning of sea stars in the immediate vicinity. 
E)  This allowed the sea stars to reproduce parthenogenetically.

Question 7

Which of the following is the best definition of parthenogenesis?

Accepted Answer

A)  The combining of genetic material from two parents to produce genetically different offspring 
B)  Eggs from a female developing into offspring without being fertilized 
C)  The creation of new organisms from body parts that have been pinched off from the parent 
D)  Gametes from the male developing into new offspring without combining with an egg 
E)  A single organism producing both eggs and sperm and fertilizing itself 
A)  The combining of genetic material from two parents to produce genetically different offspring 
B)  Eggs from a female developing into offspring without being fertilized 
C)  The creation of new organisms from body parts that have been pinched off from the parent 
D)  Gametes from the male developing into new offspring without combining with an egg 
E)  A single organism producing both eggs and sperm and fertilizing itself

Question 8

How do hormonal methods prevent conception?

Accepted Answer

They disrupt the nor

Question 9

-The structure labeled 6 secretes

Accepted Answer

A)  estrogen and progesterone. 
B)  GnRH. 
C)  testosterone and estrogen. 
D)  LH. 
E)  FSH. 
A)  estrogen and progesterone. 
B)  GnRH. 
C)  testosterone and estrogen. 
D)  LH. 
E)  FSH.

Question 10

The most important function of sexual reproduction is

Accepted Answer

A)  preserving genetic purity. 
B)  limiting genetic recombination. 
C)  keeping the genes from changing. 
D)  producing offspring identical to the parents. 
E)  creating genetic variability. 
A)  preserving genetic purity. 
B)  limiting genetic recombination. 
C)  keeping the genes from changing. 
D)  producing offspring identical to the parents. 
E)  creating genetic variability.

Question 11

Why is it necessary for many sperm to be present in order for one to fertilize the egg?

Accepted Answer

A)  The combined enzymes digest a path through the corona radiata and zona pellucida. 
B)  The combined motion of their flagella enables one sperm to push its way into the egg. 
C)  A sperm cannot find the egg by itself. 
D)  A mass of sperm is necessary to gain entry into the ovary. 
E)  A mass of sperm is necessary to open the uterine tube. 
A)  The combined enzymes digest a path through the corona radiata and zona pellucida. 
B)  The combined motion of their flagella enables one sperm to push its way into the egg. 
C)  A sperm cannot find the egg by itself. 
D)  A mass of sperm is necessary to gain entry into the ovary. 
E)  A mass of sperm is necessary to open the uterine tube.

Question 12

Why must organisms that spawn release huge numbers of eggs and sperm?

Accepted Answer

Spawning depends on releasing eggs and s

Question 13

What is the function of an acrosome?

Accepted Answer

A)  It holds large numbers of mitochondria. 
B)  It protects the sperm from vaginal secretions. 
C)  It contains enzymes that dissolve the protective layers around the egg. 
D)  It propels the sperm through the female reproductive tract. 
E)  It contains a haploid nucleus. 
A)  It holds large numbers of mitochondria. 
B)  It protects the sperm from vaginal secretions. 
C)  It contains enzymes that dissolve the protective layers around the egg. 
D)  It propels the sperm through the female reproductive tract. 
E)  It contains a haploid nucleus.

Question 14

The increased levels of estrogen from the maturing follicle cause a decrease in GnRH levels.

Accepted Answer

A) True 
 B)False

Question 15

The layer of cells that forms a barrier between the sperm and the egg is the corona radiata.

Accepted Answer

A) True 
 B)False

Question 16

The___________ provides the egg a pathway between the ovary and the uterus.

Accepted Answer

uterine tu

Question 17

Vasectomy and tubal ligation are forms of___________ .

Accepted Answer

The answer of Vasectomy and tubal ligation are forms of___________...

Question 18

Vasectomy and tubal ligation result in

Accepted Answer

A)  an interruption of the path taken by the egg or sperm. 
B)  atrophy of the gonads. 
C)  decreased levels of hormones. 
D)  a lack of semen or menstrual flow. 
E)  inability to produce eggs or sperm. 
A)  an interruption of the path taken by the egg or sperm. 
B)  atrophy of the gonads. 
C)  decreased levels of hormones. 
D)  a lack of semen or menstrual flow. 
E)  inability to produce eggs or sperm.

Question 19

Sexually transmitted infections can be spread only via unprotected intercourse.

Accepted Answer

A) True 
 B)False

Question 20

Ovulation occurs due to a surge in ___________concentrations.

Accepted Answer

A)  testosterone 
B)  LH 
C)  estrogen 
D)  FSH 
E)  progesterone 
A)  testosterone 
B)  LH 
C)  estrogen 
D)  FSH 
E)  progesterone

Exam 42: Animal Reproduction

What is the function of Sertoli cells?

Gonadotropin-releasing hormone (GnRH)

A___________ is a sperm-killing chemical that is more effective as a contraceptive when used in combination with a condom or diaphragm.

In which respect do spermatogenesis and oogenesis differ?

In humans, fertilization normally occurs in the

Which of the following is the best definition of parthenogenesis?

How do hormonal methods prevent conception?

-The structure labeled 6 secretes

The most important function of sexual reproduction is

Why is it necessary for many sperm to be present in order for one to fertilize the egg?

Why must organisms that spawn release huge numbers of eggs and sperm?

What is the function of an acrosome?

The increased levels of estrogen from the maturing follicle cause a decrease in GnRH levels.

The layer of cells that forms a barrier between the sperm and the egg is the corona radiata.

The___________ provides the egg a pathway between the ovary and the uterus.

Vasectomy and tubal ligation are forms of___________ .

Vasectomy and tubal ligation result in

Sexually transmitted infections can be spread only via unprotected intercourse.

Ovulation occurs due to a surge in ___________concentrations.

An Introduction to Life on Earth

Atoms, Molecules, and Life

Biological Molecules

Cell Structure and Function

Cell Membrane Structure and Function

Energy Flow in the Life of a Cell

Capturing Solar Energy: Photosynthesis

Harvesting Energy: Glycolysis and Cellular Respiration

Cellular Reproduction

Meiosis: the Basis of Sexual Reproduction

Patterns of Inheritance

DNA: The Molecule of Heredity

Gene Expression and Regulation

Biotechnology

Principles of Evolution

How Populations Evolve

The Origin of Species

The History of Life

Systematics: Seeking Order Amid Diversity

The Diversity of Prokaryotes and Viruses

The Diversity of Protists

The Diversity of Plants

The Diversity of Fungi

Animal Diversity I: Invertebrates

Animal Diversity Ii: Vertebrates

Animal Behavior

Population Growth and Regulation

Community Interactions

Energy Flow and Nutrient Cycling in Ecosystems

Earths Diverse Ecosystems

Conserving Earths Biodiversity

Homeostasis and the Organization of the Animal Body

Circulation

Respiration

Nutrition and Digestion

The Urinary System

Defenses Against Disease

Chemical Control of the Animal Body: the Endocrine System

The Nervous System

The Senses

Action and Support: the Muscles and Skeleton

Animal Development

Plant Anatomy and Nutrient Transport

Plant Reproduction and Development

Plant Responses to the Environment

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