Question 1

Which structure is NOT associated with the development of the central nervous system in vertebrates?

Accepted Answer

A) notochord 
B) neural plate 
C) neural tube 
D) ectoderm 
A) notochord 
B) neural plate 
C) neural tube 
D) ectoderm A

Question 2

What part of the blastocyst will develop into the human embryo and eventually into a fetus?

Accepted Answer

A) archenteron 
B) blastopore 
C) chorion 
D) trophoblast 
E) inner cell mass 
A) archenteron 
B) blastopore 
C) chorion 
D) trophoblast 
E) inner cell mass E

Question 3

What is the correct series of events during parturition? 
a.The amnion breaks.
B.The cervix dilates.
C.ACTH causes the adrenal cortex to release androgens into the bloodstream.
D.Prostaglandins and oxytocin are produced.
E.The baby is born and the umbilical cord is cut.
F.The placenta is delivered.

Accepted Answer

A) c - d - b - a - e - f 
B) c - d - a -b - e - f 
C) a - d - b - c - e - f 
D) c - d - b - f - a - e 
E) c - b - f - a - e - d 
A) c - d - b - a - e - f 
B) c - d - a -b - e - f 
C) a - d - b - c - e - f 
D) c - d - b - f - a - e 
E) c - b - f - a - e - d A

Question 4

A decrease in the function of the cardiovascular system due to aging can cause a decreased ability of the body to metabolize drugs.

Accepted Answer

A) True 
 B)False

Question 5

Which of the following stages of embryonic development consists of only two layers of cells?

Accepted Answer

A) morula 
B) blastula 
C) early gastrula 
D) late gastrula 
A) morula 
B) blastula 
C) early gastrula 
D) late gastrula

Question 6

List the correct order of steps of morphogenesis in Drosophila melanogaster.

Accepted Answer

a.Establishment of anterior/posterior ax

Question 7

Which stage would show the development of the ectoderm and endoderm germ layers?

Accepted Answer

A) early gastrulation 
B) neurulation 
C) blastulation 
D) late gastrulation 
A) early gastrulation 
B) neurulation 
C) blastulation 
D) late gastrulation

Question 8

The ________ develops into the fetal portion of the placenta.

Accepted Answer

A) amnion 
B) archenteron 
C) chorion 
D) yolk sac 
E) allantois 
A) amnion 
B) archenteron 
C) chorion 
D) yolk sac 
E) allantois

Question 9

List the correct order of steps in the development of the central nervous system of a vertebrate.

Accepted Answer

a.Thickening of cells on the dorsal surf

Question 10

The coelomic cavity is derived from the

Accepted Answer

A) blastocoel. 
B) folding of the neural tube. 
C) splitting of the mesoderm. 
D) elimination of the yolk sac nutrients. 
E) space left after organs develop. 
A) blastocoel. 
B) folding of the neural tube. 
C) splitting of the mesoderm. 
D) elimination of the yolk sac nutrients. 
E) space left after organs develop.

Question 11

By the end of the eighth week of development,all organ systems are developed in the embryo.

Accepted Answer

A) True 
 B)False

Question 12

Development of the neural system is characterized by

Accepted Answer

A) cell division and growth in size. 
B) cells becoming specialized in structure and function. 
C) body parts being shaped and patterned into a specific form. 
D) All of the choices are correct. 
E) None of the choices are correct. 
A) cell division and growth in size. 
B) cells becoming specialized in structure and function. 
C) body parts being shaped and patterned into a specific form. 
D) All of the choices are correct. 
E) None of the choices are correct.

Question 13

Generally,only one sperm fertilizes an egg because

Accepted Answer

A) sperm are so few that two are unlikely to arrive at the same time. 
B) sperm compete against one another before entering,and only the most fit one is accepted. 
C) one small entry hole called the blastopore allows only one sperm to fit through and then seals. 
D) many sperm enter but only one set of chromosomes can fuse with the egg nucleus; the other sperm are absorbed. 
E) when the first sperm membrane fuses with the egg membrane,it forms a fertilization membrane,which blocks penetration by other sperm. 
A) sperm are so few that two are unlikely to arrive at the same time. 
B) sperm compete against one another before entering,and only the most fit one is accepted. 
C) one small entry hole called the blastopore allows only one sperm to fit through and then seals. 
D) many sperm enter but only one set of chromosomes can fuse with the egg nucleus; the other sperm are absorbed. 
E) when the first sperm membrane fuses with the egg membrane,it forms a fertilization membrane,which blocks penetration by other sperm.

Question 14

Identify and briefly describe the labeled structures in the cross section of the vertebrate embryo.

Accepted Answer

A.neural tube: The neural tube is formed

Question 15

The phenomenon of apoptosis or cell death

Accepted Answer

A) is a mechanism present in every cell that occurs when an inhibitory protein is inactivated. 
B) occurs when the cellular machinery simply wears out and the cell dies from being unable to continue vital processes. 
C) occurs when the ability of the cell to repair DNA mutations finally fails. 
D) is a disease phenomenon and cell death is always a bad trait. 
E) is not yet understood but probably involves the failure of the homeobox to correctly control development. 
A) is a mechanism present in every cell that occurs when an inhibitory protein is inactivated. 
B) occurs when the cellular machinery simply wears out and the cell dies from being unable to continue vital processes. 
C) occurs when the ability of the cell to repair DNA mutations finally fails. 
D) is a disease phenomenon and cell death is always a bad trait. 
E) is not yet understood but probably involves the failure of the homeobox to correctly control development.

Question 16

Which body system develops first in a human embryo?

Accepted Answer

A) reproductive 
B) circulatory 
C) nervous 
D) respiratory 
E) excretory 
A) reproductive 
B) circulatory 
C) nervous 
D) respiratory 
E) excretory

Question 17

Identify the correct order of steps in the development of the central nervous system. 
a.Neural folds develop on either side of the neural groove
B.The neural tube forms
C.Thickening of cells on the dorsal surface called the neural plate occurs
D.The anterior end of the neural tube develops into the brain

Accepted Answer

A) c - a - b - d 
B) c - a - d - b 
C) a - c - b - d 
D) a - b - c- d 
E) d - c - b - a 
A) c - a - b - d 
B) c - a - d - b 
C) a - c - b - d 
D) a - b - c- d 
E) d - c - b - a

Question 18

Which of the following practices is believed to help the most with slowing the damage accumulation aging process?

Accepted Answer

A) a diet that consists of dark green vegetables,nuts,and red wine 
B) a diet that has a high level of cholesterol 
C) a moderate exercise program 
D) All of these will help slow the aging process. 
E) None of these will help slow the aging process. 
A) a diet that consists of dark green vegetables,nuts,and red wine 
B) a diet that has a high level of cholesterol 
C) a moderate exercise program 
D) All of these will help slow the aging process. 
E) None of these will help slow the aging process.

Question 19

Morphogenesis is characterized by

Accepted Answer

A) cell division and growth in size. 
B) cells becoming specialized in structure and function. 
C) body parts being shaped and patterned into a specific form. 
D) All of the choices are correct. 
E) None of the choices are correct. 
A) cell division and growth in size. 
B) cells becoming specialized in structure and function. 
C) body parts being shaped and patterned into a specific form. 
D) All of the choices are correct. 
E) None of the choices are correct.

Question 20

At ________ weeks,the fetal heartbeat can first be heard through a stethoscope.

Accepted Answer

A) 4 
B) 25 
C) 16 
D) 12 
E) 30 
A) 4 
B) 25 
C) 16 
D) 12 
E) 30

Exam 42: Animal Development and Aging

Which structure is NOT associated with the development of the central nervous system in vertebrates?

What part of the blastocyst will develop into the human embryo and eventually into a fetus?

What is the correct series of events during parturition? a.The amnion breaks. B.The cervix dilates. C.ACTH causes the adrenal cortex to release androgens into the bloodstream. D.Prostaglandins and oxytocin are produced. E.The baby is born and the umbilical cord is cut. F.The placenta is delivered.

A decrease in the function of the cardiovascular system due to aging can cause a decreased ability of the body to metabolize drugs.

Which of the following stages of embryonic development consists of only two layers of cells?

List the correct order of steps of morphogenesis in Drosophila melanogaster.

Which stage would show the development of the ectoderm and endoderm germ layers?

The ________ develops into the fetal portion of the placenta.

List the correct order of steps in the development of the central nervous system of a vertebrate.

The coelomic cavity is derived from the

By the end of the eighth week of development,all organ systems are developed in the embryo.

Development of the neural system is characterized by

Generally,only one sperm fertilizes an egg because

Identify and briefly describe the labeled structures in the cross section of the vertebrate embryo.

The phenomenon of apoptosis or cell death

Which body system develops first in a human embryo?

Which of the following practices is believed to help the most with slowing the damage accumulation aging process?

Morphogenesis is characterized by

At ________ weeks,the fetal heartbeat can first be heard through a stethoscope.

A View of Life

Basic Chemistry

The Chemistry of Organic Molecules

Cell Structure and Function

Membrane Structure and Function

Metabolism: Energy and Enzymes

Photosynthesis

Cellular Respiration

The Cell Cycle and Cellular Reproduction

Meiosis and Sexual Reproduction

Mendelian Patterns of Inheritance

Molecular Biology of the Gene

Regulation of Gene Expression

Biotechnology and Genomics

Darwin and Evolution

How Populations Evolve

Speciation and Macroevolution

Origin and History of Life

Taxonomy,systematics,and Phylogeny

Viruses,bacteria,and Archaea

Protist Evolution and Diversity

Fungi Evolution and Diversity

Plant Evolution and Diversity

Flowering Plants: Structure and Organization

Flowering Plants: Nutrition and Transport

Flowering Plants: Control of Growth Responses

Flowering Plants: Reproduction

Invertebrate Evolution

Vertebrate Evolution

Human Evolution

Animal Organization and Homeostasis

Circulation and Cardiovascular Systems

The Lymphatic and Immune Systems

Digestive Systems and Nutrition

Respiratory Systems

Body Fluid Regulation and Excretory Systems

Neurons and Nervous Systems

Sense Organs

Locomotion and Support Systems

Hormones and Endocrine Systems

Reproductive Systems

Behavioral Ecology

Population Ecology

Community and Ecosystem Ecology

Major Ecosystems of the Biosphere

Conservation of Biodiversity

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