Question 1

Secretions from which part of the human male anatomy produces molecules that stimulate smooth muscle contractions in the uterus of females?

Accepted Answer

A)  prostate gland 
B)  seminal vesicles 
C)  testes 
D)  bulbourethral gland 
A)  prostate gland 
B)  seminal vesicles 
C)  testes 
D)  bulbourethral gland B

Question 2

Use the following information when answering the corresponding questions).
For your internship at the local zoo, you have been assigned to help with the new orangutan- breeding program. Little is know about orangutan reproductive hormones, but hormone feedback cycles are often the same in closely related animals. You
have been asked to use your knowledge of the interactions of human reproductive hormone to recommend injections to promote ovulation in a female orangutan when a visiting male arrives for a brief breeding visit.
-A pregnant woman comes into the hospital past her due date. The doctor decides it is time for the baby to be delivered. Before performing a cesarean section, the doctor wants to try to induce labour. Which of the following would she most likely inject?

Accepted Answer

A)  estrogen 
B)  oxytocin 
C)  luteinizing hormone LH) 
D)  progesterone 
E)  follicle- stimulating hormone FSH) 
A)  estrogen 
B)  oxytocin 
C)  luteinizing hormone LH) 
D)  progesterone 
E)  follicle- stimulating hormone FSH) B

Question 3

If gastrulation was blocked by an environmental toxin, then

Accepted Answer

A)  the blastopore would form the mouth. 
B)  cleavage would not occur in the zygote. 
C)  embryonic germ layers would not form. 
D)  the blastula would not be formed. 
E)  fertilization would be blocked. 
A)  the blastopore would form the mouth. 
B)  cleavage would not occur in the zygote. 
C)  embryonic germ layers would not form. 
D)  the blastula would not be formed. 
E)  fertilization would be blocked. C

Question 4

How are mature human sperm and ova similar?

Accepted Answer

A)  Both are produced from puberty until death. 
B)  Both have the same number of chromosomes. 
C)  They are formed before birth. 
D)  They are approximately the same size. 
E)  They each have a flagellum that provides motility. 
A)  Both are produced from puberty until death. 
B)  Both have the same number of chromosomes. 
C)  They are formed before birth. 
D)  They are approximately the same size. 
E)  They each have a flagellum that provides motility.

Question 5

A physician finds that a 16- year- old male patient, who has a very high- pitched voice and underdeveloped teste has abnormally low levels of testosterone. What structures) might be the reason that this patient is producing su low level of testosterone?
1) gonads
2) pituitary gland
3) adrenal gland
4) hypothalamus
5) thyroid gland

Accepted Answer

A)  #1 only 
B)  #1 and #2 only 
C)  #1 and #2 and #3 
D)  #1 and #2 and #4 
E)  #1 and #3 and #5 
A)  #1 only 
B)  #1 and #2 only 
C)  #1 and #2 and #3 
D)  #1 and #2 and #4 
E)  #1 and #3 and #5

Question 6

Use the following information when answering the corresponding questions).
For your internship at the local zoo, you have been assigned to help with the new orangutan- breeding program. Little is know about orangutan reproductive hormones, but hormone feedback cycles are often the same in closely related animals. You
have been asked to use your knowledge of the interactions of human reproductive hormone to recommend injections to promote ovulation in a female orangutan when a visiting male arrives for a brief breeding visit.
-Which of the following hormones would you use if you want to induce ovulation in a few days?

Accepted Answer

A)  luteinizing hormones LH) 
B)  estradiol estrogen) 
C)  human chorionic gonadotropin hCG) 
D)  progesterone 
A)  luteinizing hormones LH) 
B)  estradiol estrogen) 
C)  human chorionic gonadotropin hCG) 
D)  progesterone

Question 7

An ectopic pregnancy occurs when a fertilized egg implants somewhere other than in the lining of the uterus. Usually it implants in the oviduct. Which of the following would be the most likely explanation for such a pregnancy being unsuccessful?

Accepted Answer

A)  Human chorionic gonadotropin hCG) cannot be produced in the oviduct. 
B)  The orientation of the baby would be sideways. 
C)  The lining of the oviduct is unable to support the developing fetus. 
D)  The necessary hormones cannot reach the developing fetus in the oviduct. 
A)  Human chorionic gonadotropin hCG) cannot be produced in the oviduct. 
B)  The orientation of the baby would be sideways. 
C)  The lining of the oviduct is unable to support the developing fetus. 
D)  The necessary hormones cannot reach the developing fetus in the oviduct.

Question 8

On a submarine expedition to the ocean bottom, you discover a population of fish that uses a method of reproduction in which female offspring develop from unfertilized eggs. What type of reproduction is this?

Accepted Answer

A)  parthenogenesis 
B)  budding 
C)  cloning 
D)  sexual 
E)  hermaphroditism 
A)  parthenogenesis 
B)  budding 
C)  cloning 
D)  sexual 
E)  hermaphroditism

Question 9

You are studying two species of birds, both of which form monogamous pairs one male and one female). In species 1, you find that the eggs in a pair's nest are in fact almost always the offspring of that pair. In species 2, you are surprised to find that many of the eggs in a nest were actually fathered by males of neighboring pairs. Apparently, mating outside of monogamous pairings is widespread in species 2. Given this information, what would be the logical prediction to make before comparing testis size of males of the two species?

Accepted Answer

A)  Testes of species 2 are larger than testes of species 1. 
B)  Testes of species 1 are larger than testes of species 2. 
C)  There is no relationship between this observation and the size of testes. 
A)  Testes of species 2 are larger than testes of species 1. 
B)  Testes of species 1 are larger than testes of species 2. 
C)  There is no relationship between this observation and the size of testes.

Question 10

Why are bird eggs more nutrient rich relative to those found in a human?

Accepted Answer

A)  In order to form the calcium carbonate egg shell. 
B)  Birds have a longer gestation period than humans and so require more nutrients. 
C)  The development of a bird embryo is more complex than the development of a human embryo. 
D)  The nutrients must sustain development until hatching. 
A)  In order to form the calcium carbonate egg shell. 
B)  Birds have a longer gestation period than humans and so require more nutrients. 
C)  The development of a bird embryo is more complex than the development of a human embryo. 
D)  The nutrients must sustain development until hatching.

Question 11

Labour contractions can be increased by the medical use of a synthetic drug that mimics the action of which molecule?

Accepted Answer

A)  oxytocin 
B)  testosterone 
C)  vasopressin 
D)  prolactin 
E)  luteinizing hormone 
A)  oxytocin 
B)  testosterone 
C)  vasopressin 
D)  prolactin 
E)  luteinizing hormone

Question 12

By what mechanism does a second male mating with a female gain an advantage in sperm competition in some insects?

Accepted Answer

A)  The second male's sperm physically dislodge the first male's sperm and insert themselves in place. 
B)  The accessory fluids from the second male's semen is able to displace stored sperm from competing males. 
C)  The second male will have larger testes and so produce larger numbers of sperm. 
D)  Answers A and B are both correct. 
A)  The second male's sperm physically dislodge the first male's sperm and insert themselves in place. 
B)  The accessory fluids from the second male's semen is able to displace stored sperm from competing males. 
C)  The second male will have larger testes and so produce larger numbers of sperm. 
D)  Answers A and B are both correct.

Question 13

Use the following information when answering the corresponding questions).
For your internship at the local zoo, you have been assigned to help with the new orangutan- breeding program. Little is know about orangutan reproductive hormones, but hormone feedback cycles are often the same in closely related animals. You
have been asked to use your knowledge of the interactions of human reproductive hormone to recommend injections to promote ovulation in a female orangutan when a visiting male arrives for a brief breeding visit.
-Which of the following hormones would you use if you want to induce ovulation right away?

Accepted Answer

A)  luteinizing hormones LH) 
B)  estradiol estrogen) 
C)  human chorionic gonadotropin hCG) 
D)  progesterone 
A)  luteinizing hormones LH) 
B)  estradiol estrogen) 
C)  human chorionic gonadotropin hCG) 
D)  progesterone

Question 14

During the menstrual cycle, peaks first, _ peak next, and finally surges.

Accepted Answer

A)  estradiol; LH and progesterone; FSH 
B)  estradiol; LH and FSH; testosterone 
C)  estradiol; LH and FSH; progesterone 
D)  testosterone; estradiol and FSH; progesterone 
E)  progesterone; LH and FSH; estradiol 
A)  estradiol; LH and progesterone; FSH 
B)  estradiol; LH and FSH; testosterone 
C)  estradiol; LH and FSH; progesterone 
D)  testosterone; estradiol and FSH; progesterone 
E)  progesterone; LH and FSH; estradiol

Question 15

Sexual reproduction

Accepted Answer

A)  allows animals to conserve resources and reproduce only during optimal conditions. 
B)  enables males and females to remain isolated from each other while rapidly colonizing habitats. 
C)  yields more numerous offspring more rapidly than is possible with asexual reproduction. 
D)  can produce diverse phenotypes that may enhance survival of a population in a changing environment. 
E)  guarantees that both parents will provide care for each offspring. 
A)  allows animals to conserve resources and reproduce only during optimal conditions. 
B)  enables males and females to remain isolated from each other while rapidly colonizing habitats. 
C)  yields more numerous offspring more rapidly than is possible with asexual reproduction. 
D)  can produce diverse phenotypes that may enhance survival of a population in a changing environment. 
E)  guarantees that both parents will provide care for each offspring.

Question 16

What makes sexually reproduced offspring genetically different from their parents?

Accepted Answer

A)  genetic recombination during meiosis 
B)  fusion of haploid gametes from different parents during fertilization 
C)  genetic recombination during mitosis 
D)  both A and B 
E)  all of the above 
A)  genetic recombination during meiosis 
B)  fusion of haploid gametes from different parents during fertilization 
C)  genetic recombination during mitosis 
D)  both A and B 
E)  all of the above

Question 17

Changes in cell position occur extensively during which of the following?

Accepted Answer

A)  cleavage, but not during gastrulation or organogenesis 
B)  gastrulation and cleavage 
C)  gastrulation 
D)  fertilization and cleavage, but not during gastrulation 
E)  organogenesis, but not during gastrulation or cleavage 
A)  cleavage, but not during gastrulation or organogenesis 
B)  gastrulation and cleavage 
C)  gastrulation 
D)  fertilization and cleavage, but not during gastrulation 
E)  organogenesis, but not during gastrulation or cleavage

Question 18

Which of the following is NOT a true statement about puberty in humans in the United States?

Accepted Answer

A)  On average, puberty occurs at a younger age now than it did 200 years ago. 
B)  On average, puberty occurs later in girls with larger fat stores than it does in thin girls. 
C)  Puberty is initiated by hormones from the hypothalamic- pituitary axis. 
D)  All of the above are true statements about puberty. 
E)  Only answers A and B are true. 
A)  On average, puberty occurs at a younger age now than it did 200 years ago. 
B)  On average, puberty occurs later in girls with larger fat stores than it does in thin girls. 
C)  Puberty is initiated by hormones from the hypothalamic- pituitary axis. 
D)  All of the above are true statements about puberty. 
E)  Only answers A and B are true.

Question 19

What is a primary difference between the estrous and menstrual cycles?

Accepted Answer

A)  The endometrium shed by the uterus during the estrous cycle is reabsorbed with no extensive fluid flow out of the body, whereas the shed endometrium of menstrual cycles is excreted from the body. 
B)  Copulation normally occurs across the estrous cycle, whereas in menstrual cycles copulation only occurs during the period surrounding ovulation. 
C)  Season and climate have less pronounced effects on estrous cycles than they do on menstrual cycles. 
D)  Behavioural changes during estrous cycles are much less apparent than those of menstrual cycles. 
A)  The endometrium shed by the uterus during the estrous cycle is reabsorbed with no extensive fluid flow out of the body, whereas the shed endometrium of menstrual cycles is excreted from the body. 
B)  Copulation normally occurs across the estrous cycle, whereas in menstrual cycles copulation only occurs during the period surrounding ovulation. 
C)  Season and climate have less pronounced effects on estrous cycles than they do on menstrual cycles. 
D)  Behavioural changes during estrous cycles are much less apparent than those of menstrual cycles.

Question 20

In an animal that switches between sexual and asexual reproduction, when is sexual reproduction more likely to occur?

Accepted Answer

A)  when conditions for survival are unfavourable 
B)  when conditions for survival are favourable 
C)  neither of the above 
A)  when conditions for survival are unfavourable 
B)  when conditions for survival are favourable 
C)  neither of the above

Exam 47: Animal Reproduction and Development

Secretions from which part of the human male anatomy produces molecules that stimulate smooth muscle contractions in the uterus of females?

If gastrulation was blocked by an environmental toxin, then

How are mature human sperm and ova similar?

An ectopic pregnancy occurs when a fertilized egg implants somewhere other than in the lining of the uterus. Usually it implants in the oviduct. Which of the following would be the most likely explanation for such a pregnancy being unsuccessful?

On a submarine expedition to the ocean bottom, you discover a population of fish that uses a method of reproduction in which female offspring develop from unfertilized eggs. What type of reproduction is this?

Why are bird eggs more nutrient rich relative to those found in a human?

Labour contractions can be increased by the medical use of a synthetic drug that mimics the action of which molecule?

By what mechanism does a second male mating with a female gain an advantage in sperm competition in some insects?

During the menstrual cycle, peaks first, _ peak next, and finally surges.

Sexual reproduction

What makes sexually reproduced offspring genetically different from their parents?

Changes in cell position occur extensively during which of the following?

Which of the following is NOT a true statement about puberty in humans in the United States?

What is a primary difference between the estrous and menstrual cycles?

In an animal that switches between sexual and asexual reproduction, when is sexual reproduction more likely to occur?

Biology and the Tree of Life

Water and Carbon: the Chemical Basis of Life

Protein Structure and Function

Nucleic Acids and the Rna World

An Introduction to Carbohydrates

Lipids, Membranes, and the First Cells

Inside the Cell

Energy and Enzymes

Cellular Respiration and Fermentation

Photosynthesis

Cellcell Interactions

The Cell Cycle

Meiosis

Mendel and the Gene

Dna and the Gene: Synthesis and Repair

How Genes Work

Transcription, Rna Processing, and Translation

Control of Gene Expression in Bacteria

Control of Gene Expression in Eukaryotes

The Molecular Revolution: Biotechnology and Beyond

Gene Structure and Development

Evolution by Natural Selection

Evolutionary Processes

Speciation

Phylogenies and the History of Life

Bacteria and Archaea

Protists

Green Algae and Land Plants

Fungi

An Introduction to Animals

Protostome Animals

Deuterostome Animals

Viruses

Plant Form and Function

Water and Sugar Transport in Plants

Plant Nutrition

Plant Sensory Systems, Signals, and Responses

Plant Reproduction and Development

Animal Form and Function

Water and Electrolyte Balance in Animals

Animal Nutrition

Gas Exchange and Circulation

Animal Nervous Systems

Animal Sensory Systems

Animal Movement

Chemical Signals in Animals

The Immune System in Animals

An Introduction to Ecology

Behavioural Ecology

Population Ecology

Community Ecology

Ecosystems and Global Ecology

Biodiversity and Conservation Biology

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