Question 1

Most of the noncellular fluid in ejaculated human semen is composed of

Accepted Answer

A)  the secretions of the seminiferous tubules. 
B)  the secretions of the bulbourethral glands. 
C)  the secretions of the seminal vesicles. 
D)  the secretions of the prostate gland. 
E)  anticoagulant enzymes. 
A)  the secretions of the seminiferous tubules. 
B)  the secretions of the bulbourethral glands. 
C)  the secretions of the seminal vesicles. 
D)  the secretions of the prostate gland. 
E)  anticoagulant enzymes. C

Question 2

At the time of fertilization, the complete maturation of each oogonium has resulted in

Accepted Answer

A)  one secondary oocyte. 
B)  two primary oocytes. 
C)  four secondary oocytes. 
D)  four primary oocytes. 
E)  four zygotes. 
A)  one secondary oocyte. 
B)  two primary oocytes. 
C)  four secondary oocytes. 
D)  four primary oocytes. 
E)  four zygotes. A

Question 3

An oocyte released from a human ovary enters the oviduct as a result of

Accepted Answer

A)  the beating action of the flagellum on the oocyte. 
B)  the force of the follicular ejection directing the oocyte into the oviduct. 
C)  the wavelike beating of cilia lining the oviduct. 
D)  movement of the oocyte through the pulsating uterus into the oviduct. 
E)  peristaltic contraction of ovarian muscles. 
A)  the beating action of the flagellum on the oocyte. 
B)  the force of the follicular ejection directing the oocyte into the oviduct. 
C)  the wavelike beating of cilia lining the oviduct. 
D)  movement of the oocyte through the pulsating uterus into the oviduct. 
E)  peristaltic contraction of ovarian muscles. C

Question 4

A reproductive hormone that is secreted directly from a structure in the brain is

Accepted Answer

A)  testosterone. 
B)  estradiol. 
C)  progesterone. 
D)  follicle-stimulating hormone. 
E)  gonadotropin-releasing hormone. 
A)  testosterone. 
B)  estradiol. 
C)  progesterone. 
D)  follicle-stimulating hormone. 
E)  gonadotropin-releasing hormone.

Question 5

The primary function of the corpus luteum is to

Accepted Answer

A)  nourish and protect the egg cell. 
B)  produce prolactin in the alveoli. 
C)  maintain progesterone and estrogen synthesis after ovulation has occurred. 
D)  stimulate the development of the mammary glands. 
E)  support pregnancy in the second and third trimesters. 
A)  nourish and protect the egg cell. 
B)  produce prolactin in the alveoli. 
C)  maintain progesterone and estrogen synthesis after ovulation has occurred. 
D)  stimulate the development of the mammary glands. 
E)  support pregnancy in the second and third trimesters.

Question 6

Which of the following is a true statement?

Accepted Answer

A)  All mammals have menstrual cycles. 
B)  The endometrial lining is shed in menstrual cycles but reabsorbed in estrous cycles. 
C)  Estrous cycles are more frequent than menstrual cycles. 
D)  Estrous cycles are not controlled by hormones. 
E)  Ovulation occurs before the endometrium thickens in estrous cycles. 
A)  All mammals have menstrual cycles. 
B)  The endometrial lining is shed in menstrual cycles but reabsorbed in estrous cycles. 
C)  Estrous cycles are more frequent than menstrual cycles. 
D)  Estrous cycles are not controlled by hormones. 
E)  Ovulation occurs before the endometrium thickens in estrous cycles.

Question 7

The junction of the upper vagina and the uterus is called the

Accepted Answer

A)  fallopian tube. 
B)  clitoris. 
C)  oviduct. 
D)  labia majora. 
E)  cervix. 
A)  fallopian tube. 
B)  clitoris. 
C)  oviduct. 
D)  labia majora. 
E)  cervix.

Question 8

All individuals of a particular species of whiptail lizards are females. Their reproductive efforts depend on

Accepted Answer

A)  fertilization of their eggs by males of other lizard species. 
B)  gonadal structures that only undergo mitosis. 
C)  meiosis followed by a doubling of the chromosomes in eggs. 
D)  budding prior to the development of a sexual phenotype. 
E)  fragmentation via autolysis. 
A)  fertilization of their eggs by males of other lizard species. 
B)  gonadal structures that only undergo mitosis. 
C)  meiosis followed by a doubling of the chromosomes in eggs. 
D)  budding prior to the development of a sexual phenotype. 
E)  fragmentation via autolysis.

Question 9

Refer to the following figure, which diagrams the reproductive anatomy of the human female, to answer the following questions.
  
-In the above figure, which letter points to the cervix?

Accepted Answer

A)  A 
B)  B 
C)  C 
D)  D 
E)  E 
A)  A 
B)  B 
C)  C 
D)  D 
E)  E

Question 10

Fertilization of human eggs usually takes place in the

Accepted Answer

A)  ovary. 
B)  uterus. 
C)  vagina. 
D)  oviduct. 
E)  cervix. 
A)  ovary. 
B)  uterus. 
C)  vagina. 
D)  oviduct. 
E)  cervix.

Question 11

Imagine that a woman is in the final week of her pregnancy. Her doctor gives her an injection of oxytocin. The likely result of this is that the pregnant woman would

Accepted Answer

A)  undergo the loss of oxytocin receptors from her uterine smooth muscle cells. 
B)  stop secreting prostaglandins from the placenta. 
C)  undergo vigorous contractions of her uterine muscles. 
D)  increase the synthesis and secretion of progesterone. 
E)  be prevented from lactation. 
A)  undergo the loss of oxytocin receptors from her uterine smooth muscle cells. 
B)  stop secreting prostaglandins from the placenta. 
C)  undergo vigorous contractions of her uterine muscles. 
D)  increase the synthesis and secretion of progesterone. 
E)  be prevented from lactation.

Question 12

Regeneration, the regrowth of lost body parts, normally follows

Accepted Answer

A)  all types of asexual reproduction. 
B)  all types of sexual reproduction. 
C)  fission. 
D)  fragmentation. 
E)  parthenogenesis. 
A)  all types of asexual reproduction. 
B)  all types of sexual reproduction. 
C)  fission. 
D)  fragmentation. 
E)  parthenogenesis.

Question 13

Among mammals, the male and female genital structures that consist mostly of erectile tissue include the

Accepted Answer

A)  penis and clitoris. 
B)  vas deferens and oviduct. 
C)  testes and ovaries. 
D)  seminiferous tubules and hymen. 
E)  prostate and ovaries. 
A)  penis and clitoris. 
B)  vas deferens and oviduct. 
C)  testes and ovaries. 
D)  seminiferous tubules and hymen. 
E)  prostate and ovaries.

Question 14

In excreted urine, a reliable "marker" that a pregnancy has initiated is

Accepted Answer

A)  progesterone. 
B)  estrogen. 
C)  follicle-stimulating hormone. 
D)  chorionic gonadotropin. 
E)  hypothalamic-releasing hormones. 
A)  progesterone. 
B)  estrogen. 
C)  follicle-stimulating hormone. 
D)  chorionic gonadotropin. 
E)  hypothalamic-releasing hormones.

Question 15

The moment of orgasm is characterized by

Accepted Answer

A)  the ovulation of the oocyte from the ovary. 
B)  the release of sperm from the seminiferous tubules. 
C)  rhythmic contraction of many parts of the reproductive system. 
D)  increased synthesis and release of ovarian steroid hormones. 
E)  increased synthesis and release of testicular steroid hormones. 
A)  the ovulation of the oocyte from the ovary. 
B)  the release of sperm from the seminiferous tubules. 
C)  rhythmic contraction of many parts of the reproductive system. 
D)  increased synthesis and release of ovarian steroid hormones. 
E)  increased synthesis and release of testicular steroid hormones.

Question 16

The hypothalamic hormone that stimulates hormone secretion by the anterior pituitary gland is

Accepted Answer

A)  LH. 
B)  FSH. 
C)  inhibin. 
D)  GnRH. 
E)  estradiol. 
A)  LH. 
B)  FSH. 
C)  inhibin. 
D)  GnRH. 
E)  estradiol.

Question 17

A vasectomy

Accepted Answer

A)  eliminates spermatogenesis. 
B)  eliminates testosterone synthesis. 
C)  prevents implantation of an embryo. 
D)  prevents sperm from exiting the male urethra. 
E)  prevents oocytes from entering the uterus. 
A)  eliminates spermatogenesis. 
B)  eliminates testosterone synthesis. 
C)  prevents implantation of an embryo. 
D)  prevents sperm from exiting the male urethra. 
E)  prevents oocytes from entering the uterus.

Question 18

Two contraceptive methods that are generally irreversible and which block the gametes from moving to a site where fertilization can occur are

Accepted Answer

A)  the male condom and female condom. 
B)  the male condom and oral contraceptives. 
C)  vasectomy and tubal ligation. 
D)  coitus interruptus and rhythm method. 
E)  the diaphragm and subcutaneous progesterone implant. 
A)  the male condom and female condom. 
B)  the male condom and oral contraceptives. 
C)  vasectomy and tubal ligation. 
D)  coitus interruptus and rhythm method. 
E)  the diaphragm and subcutaneous progesterone implant.

Question 19

Refer to the following figure, which diagrams the reproductive anatomy of the human female, to answer the following questions.
  
-In the above figure, which letter points to the uterus?

Accepted Answer

A)  A 
B)  B 
C)  C 
D)  D 
E)  E 
A)  A 
B)  B 
C)  C 
D)  D 
E)  E

Question 20

Females of many insect species, including honeybee queens, can store gametes shed by their mating partners in

Accepted Answer

A)  their nests. 
B)  the abdominal tract. 
C)  the cloaca. 
D)  the uterus. 
E)  the spermatheca. 
A)  their nests. 
B)  the abdominal tract. 
C)  the cloaca. 
D)  the uterus. 
E)  the spermatheca.

Exam 46: Animal Reproduction

Most of the noncellular fluid in ejaculated human semen is composed of

At the time of fertilization, the complete maturation of each oogonium has resulted in

An oocyte released from a human ovary enters the oviduct as a result of

A reproductive hormone that is secreted directly from a structure in the brain is

The primary function of the corpus luteum is to

Which of the following is a true statement?

The junction of the upper vagina and the uterus is called the

All individuals of a particular species of whiptail lizards are females. Their reproductive efforts depend on

Refer to the following figure, which diagrams the reproductive anatomy of the human female, to answer the following questions. -In the above figure, which letter points to the cervix?

Fertilization of human eggs usually takes place in the

Imagine that a woman is in the final week of her pregnancy. Her doctor gives her an injection of oxytocin. The likely result of this is that the pregnant woman would

Regeneration, the regrowth of lost body parts, normally follows

Among mammals, the male and female genital structures that consist mostly of erectile tissue include the

In excreted urine, a reliable "marker" that a pregnancy has initiated is

The moment of orgasm is characterized by

The hypothalamic hormone that stimulates hormone secretion by the anterior pituitary gland is

A vasectomy

Two contraceptive methods that are generally irreversible and which block the gametes from moving to a site where fertilization can occur are

Refer to the following figure, which diagrams the reproductive anatomy of the human female, to answer the following questions. -In the above figure, which letter points to the uterus?

Females of many insect species, including honeybee queens, can store gametes shed by their mating partners in

Introduction: Themes in the Study of Life

The Chemical Context of Life

Water and Life

Carbon and the Molecular Diversity of Life

The Structure and Function of Large Biological Molecules

A Tour of the Cell

Membrane Structure and Function

An Introduction to Metabolism

Cellular Respiration and Fermentation

Photosynthesis

Cell Communication

The Cell Cycle

Meiosis and Sexual Life Cycles

Mendel and the Gene Idea

The Chromosomal Basis of Inheritance

The Molecular Basis of Inheritance

From Gene to Protein

Regulation of Gene Expression

Viruses

Biotechnology

Genomes and Their Evolution

Descent with Modification: A Darwinian View of Life

The Evolution of Populations

The Origin of Species

The History of Life on Earth

Phylogeny and the Tree of Life

Bacteria and Archaea

Protists

Plant Diversity I: How Plants Colonized Land

Plant Diversity II: The Evolution of Seed Plants

Fungi

An Overview of Animal Diversity

An Introduction to Invertebrates

The Origin and Evolution of Vertebrates

Plant Structure, Growth, and Development

Resource Acquisition and Transport in Vascular Plants

Soil and Plant Nutrition

Angiosperm Reproduction and Biotechnology

Plant Responses to Internal and External Signals

Basic Principles of Animal Form and Function

Animal Nutrition

Circulation and Gas Exchange

The Immune System

Osmoregulation and Excretion

Hormones and the Endocrine System

Animal Development

Neurons, Synapses, and Signaling

Nervous Systems

Sensory and Motor Mechanisms

Animal Behavior

An Introduction to Ecology and the Biosphere

Population Ecology

Community Ecology

Ecosystems and Restoration Ecology

Conservation Biology and Global Change

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