Question 1

What prevents multiple sperm from fertilizing one egg?

Accepted Answer

A) release of granules that harden the membrane outside of the oocyte 
B) atresia 
C) phagocytosis by accessory cells once one sperm contacts the membrane 
D) egg immediately divides and becomes impervious to sperm 
A) release of granules that harden the membrane outside of the oocyte 
B) atresia 
C) phagocytosis by accessory cells once one sperm contacts the membrane 
D) egg immediately divides and becomes impervious to sperm

Question 2

In humans,females contribute more resources to reproduction and development than males.

Accepted Answer

A) True 
 B)False

Question 3

An ovarian follicle is a developing oocyte and the follicular cells surrounding it.

Accepted Answer

A) True 
 B)False

Question 4

Which of the following statements concerning sperm and fertilization is correct?

Accepted Answer

A) The first sperm that approaches the egg is the one to fertilize the egg. 
B) Many sperm release their enzymes before one can get through. 
C) The first capacitated sperm fertilizes the egg. 
D) Several sperm must contribute their DNA to the egg for fertilization to occur. 
A) The first sperm that approaches the egg is the one to fertilize the egg. 
B) Many sperm release their enzymes before one can get through. 
C) The first capacitated sperm fertilizes the egg. 
D) Several sperm must contribute their DNA to the egg for fertilization to occur.

Question 5

Human embryos do not go through a morula stage of development as do most other animals.

Accepted Answer

A) True 
 B)False

Question 6

The normal position of the fetus at the start of labor is "upside down."

Accepted Answer

A) True 
 B)False

Question 7

Given the loss of childbearing ability and negative health effects associated with menopause,there is cause to question why it exists given that evolution usually selects against most negative health effects and reduced fertility.Appraise and compare the two possible explanations covered in this section.

Accepted Answer

One hypothesis is that human females are

Question 8

The male stem cells in sperm production are the spermatogonia.

Accepted Answer

A) True 
 B)False

Question 9

What changes occur in the endometrium as the time of possible fertilization approaches?

Accepted Answer

A) Menstruation occurs. 
B) The endometrium enters the proliferative phase. 
C) The endometrium enters the secretory phase. 
D) The endometrium secretes estrogen. 
A) Menstruation occurs. 
B) The endometrium enters the proliferative phase. 
C) The endometrium enters the secretory phase. 
D) The endometrium secretes estrogen.

Question 10

A woman begins puberty with about 400,000 follicles.

Accepted Answer

A) True 
 B)False

Question 11

Which is the only trimester to include both the embryo and fetal stages?

Accepted Answer

The answer of Which is the only trimester to include...

Question 12

An ectopic pregnancy is:

Accepted Answer

A) implantation of the embryo in the uterus. 
B) another name for fraternal twins. 
C) another name for identical twins. 
D) attachment of an embryo outside the uterus. 
A) implantation of the embryo in the uterus. 
B) another name for fraternal twins. 
C) another name for identical twins. 
D) attachment of an embryo outside the uterus.

Question 13

Which of these is not a supporting gland in males?

Accepted Answer

A) prostate gland 
B) seminal vesicle 
C) epididymis 
D) bulbourethral gland 
A) prostate gland 
B) seminal vesicle 
C) epididymis 
D) bulbourethral gland

Question 14

Sperm development begins in the:

Accepted Answer

A) prostate gland. 
B) seminiferous tubules. 
C) epididymis. 
D) vas deferens. 
A) prostate gland. 
B) seminiferous tubules. 
C) epididymis. 
D) vas deferens.

Question 15

What is the long tube through which mature sperm are transported to the urethra during ejaculation?

Accepted Answer

The answer of What is the long tube through which...

Question 16

Implantation occurs in the:

Accepted Answer

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

Question 17

Why is it useful for accessory glands to produce alkaline substances to accompany sperm?

Accepted Answer

A) Alkaline substances neutralize the acidic environment of the vagina. 
B) Alkaline substances produce a pH optimum for nutrient absorption. 
C) Alkaline substances are mainly fats used for energy. 
D) Alkaline substances function as enzymes needed for swimming. 
A) Alkaline substances neutralize the acidic environment of the vagina. 
B) Alkaline substances produce a pH optimum for nutrient absorption. 
C) Alkaline substances are mainly fats used for energy. 
D) Alkaline substances function as enzymes needed for swimming.

Question 18

How many sperm participate in the formation of fraternal twins?

Accepted Answer

A) one 
B) two 
C) three 
D) four 
A) one 
B) two 
C) three 
D) four

Question 19

Ejaculation initially deposits the sperm in the uterus.

Accepted Answer

A) True 
 B)False

Question 20

The vas deferens ducts empty sperm into the:

Accepted Answer

A) seminal vesicles. 
B) epididymis. 
C) uterus. 
D) urethra. 
A) seminal vesicles. 
B) epididymis. 
C) uterus. 
D) urethra.

Exam 33: How the Baby Came to Be: Human Reproduction

What prevents multiple sperm from fertilizing one egg?

In humans,females contribute more resources to reproduction and development than males.

An ovarian follicle is a developing oocyte and the follicular cells surrounding it.

Which of the following statements concerning sperm and fertilization is correct?

Human embryos do not go through a morula stage of development as do most other animals.

The normal position of the fetus at the start of labor is "upside down."

The male stem cells in sperm production are the spermatogonia.

What changes occur in the endometrium as the time of possible fertilization approaches?

A woman begins puberty with about 400,000 follicles.

Which is the only trimester to include both the embryo and fetal stages?

An ectopic pregnancy is:

Which of these is not a supporting gland in males?

Sperm development begins in the:

What is the long tube through which mature sperm are transported to the urethra during ejaculation?

Implantation occurs in the:

Why is it useful for accessory glands to produce alkaline substances to accompany sperm?

How many sperm participate in the formation of fraternal twins?

Ejaculation initially deposits the sperm in the uterus.

The vas deferens ducts empty sperm into the:

Science As a Way of Learning: a Guide to the Natural World

Fundamental Building Blocks: Chemistry, water, and Ph

Lifes Components: Biological Molecules

Lifes Home: the Cell

Lifes Border: the Plasma Membrane

Lifes Mainspring: an Introduction to Energy

Vital Harvest: Deriving Energy From Food

The Green Worlds Gift: Photosynthesis

The Links in Lifes Chain: Genetics and Cell Division

Preparing for Sexual Reproduction: Meiosis

The First Geneticist: Mendel and His Discoveries

Units of Heredity: Chromosomes and Inheritance

Passing on Lifes Information: Dna Structure and Replication

How Proteins Are Made: Genetic Transcription, translation, and Regulation

The Future Isnt What It Used to Be: Biotechnology

An Introduction to Evolution: Charles Darwin, evolutionary Thought, and the Evidence for Evolution

The Means of Evolution: Microevolution

The Outcomes of Evolution: Macroevolution

A Slow Unfolding: the History of Life on Earth

Arriving Late,traveling Far: the Evolution of Human Beings

Viruses,bacteria,archaea,and Protists: the Diversity of Life 1

Fungi: the Diversity of Life 2

Animals: the Diversity of Life 3

Plants: the Diversity of Life 4

The Angiosperms: Form and Function in Flowering Plants

Body Support and Movement: the Integumentary, skeletal, and Muscular Systems

Communication and Control 1: the Nervous System

Communication and Control 2: the Endocrine System

Defending the Body: the Immune System

Transport and Exchange 1: Blood and Breath

Transport and Exchange 2: Digestion, nutrition, and Elimination

An Amazingly Detailed Script: Animal Development

An Interactive Living World 1: Populations in Ecology

An Interactive Living World 2: Communities in Ecology

An Interactive Living World 3: Ecosystems and Biomes

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