Question 1

At 10 weeks, the blastocyst becomes an embryo.

Accepted Answer

A) True 
 B)False

Question 2

The are finger- like extensions from the fetal membranes that extend into the endometrium.

Accepted Answer

The answer of The are finger- like extensions from the...

Question 3

is caused when a woman drinks heavily throughout her pregnancy.

Accepted Answer

Fetal alco

Question 4

In humans, implantation occurs

Accepted Answer

A)  when the embryo is a gastrula. 
B)  after the formation of the neural tube. 
C)  just prior to fertilization. 
D)  when the zygote is a blastocyst. 
E)  immediately after fertilization. 
A)  when the embryo is a gastrula. 
B)  after the formation of the neural tube. 
C)  just prior to fertilization. 
D)  when the zygote is a blastocyst. 
E)  immediately after fertilization.

Question 5

What occurs during organogenesis?

Accepted Answer

Organs develop from

Question 6

What makes the cells of a developing embryo differentiate into various types of cells?

Accepted Answer

A)  They have different genes. 
B)  Different genes are activated. 
C)  The DNA of their mitochondria is different. 
D)  Special genes in the cytoplasm cause this differentiation. 
E)  Once certain genes of a cell have caused it to differentiate, the other genes are lost. 
A)  They have different genes. 
B)  Different genes are activated. 
C)  The DNA of their mitochondria is different. 
D)  Special genes in the cytoplasm cause this differentiation. 
E)  Once certain genes of a cell have caused it to differentiate, the other genes are lost.

Question 7

In a reptile egg, which membrane is analogous to a lung?

Accepted Answer

A)  Yolk sac 
B)  Blastocyst 
C)  Allantois 
D)  Chorion 
E)  Amnion 
A)  Yolk sac 
B)  Blastocyst 
C)  Allantois 
D)  Chorion 
E)  Amnion

Question 8

The mesoderm develops into the dermis of the skin and the skeleton.

Accepted Answer

A) True 
 B)False

Question 9

The amnion forms the watery environment that encloses the embryo.

Accepted Answer

A) True 
 B)False

Question 10

Most microbes cannot gain access to the fetus. However, _, which causes syphilis in adults, can cross the placenta and attack the fetus, causing stillbirths and mental retardation.

Accepted Answer

A)  rubella 
B)  HIV 
C)  Treponema pallidum 
D)  Listeria 
E)  Staphylococcus 
A)  rubella 
B)  HIV 
C)  Treponema pallidum 
D)  Listeria 
E)  Staphylococcus

Question 11

-The structure labeled 2 is the

Accepted Answer

A)  yolk sac. 
B)  allantois. 
C)  amnion. 
D)  chorion. 
E)  embryo. 
A)  yolk sac. 
B)  allantois. 
C)  amnion. 
D)  chorion. 
E)  embryo.

Question 12

is the antibody- rich milk produced in the first few days after delivery.

Accepted Answer

The answer of is the antibody- rich milk produced in...

Question 13

Induction refers to

Accepted Answer

A)  the formation of the nervous system. 
B)  the migration of cells to form the gastrula. 
C)  the formation of the mesoderm layer in a gastrula. 
D)  chemical messengers from one embryonic cell influencing the development of other cells. 
E)  hormones from the mother's blood altering the development of the embryo. 
A)  the formation of the nervous system. 
B)  the migration of cells to form the gastrula. 
C)  the formation of the mesoderm layer in a gastrula. 
D)  chemical messengers from one embryonic cell influencing the development of other cells. 
E)  hormones from the mother's blood altering the development of the embryo.

Question 14

The proteins that bind to the DNA near regions where gene transcription begins are called

Accepted Answer

A)  promoter genes. 
B)  transcription factors. 
C)  the gray crescent. 
D)  mRNA. 
E)  homeobox genes. 
A)  promoter genes. 
B)  transcription factors. 
C)  the gray crescent. 
D)  mRNA. 
E)  homeobox genes.

Question 15

The nervous system develops from the endoderm.

Accepted Answer

A) True 
 B)False

Question 16

Most fetuses can survive outside the womb after a minimum of weeks.

Accepted Answer

A)  32 
B)  38 
C)  20 
D)  15 
E)  45 
A)  32 
B)  38 
C)  20 
D)  15 
E)  45

Question 17

What is differentiation?

Accepted Answer

A)  The process in which different organ systems become specialized 
B)  The process in which different cells develop into different cell types 
C)  The process in which different tissues specialize into specific organs 
D)  The process in which different organs specialize in function 
A)  The process in which different organ systems become specialized 
B)  The process in which different cells develop into different cell types 
C)  The process in which different tissues specialize into specific organs 
D)  The process in which different organs specialize in function

Question 18

If your roommate smokes and she gets pregnant, what dangers would you warn her about?

Accepted Answer

Smoking during pregnancy leads

Question 19

All cells in an animal, with the exception of gametes, are genetically identical.

Accepted Answer

A) True 
 B)False

Question 20

How is blood flow in the placenta maintained so that there is maximum opportunity for the exchange of materials while still keeping the blood of the mother and the baby separate?

Accepted Answer

The mother's capillaries break down so t

Exam 43: Animal Development

At 10 weeks, the blastocyst becomes an embryo.

The are finger- like extensions from the fetal membranes that extend into the endometrium.

is caused when a woman drinks heavily throughout her pregnancy.

In humans, implantation occurs

What occurs during organogenesis?

What makes the cells of a developing embryo differentiate into various types of cells?

In a reptile egg, which membrane is analogous to a lung?

The mesoderm develops into the dermis of the skin and the skeleton.

The amnion forms the watery environment that encloses the embryo.

Most microbes cannot gain access to the fetus. However, _, which causes syphilis in adults, can cross the placenta and attack the fetus, causing stillbirths and mental retardation.

-The structure labeled 2 is the

is the antibody- rich milk produced in the first few days after delivery.

Induction refers to

The proteins that bind to the DNA near regions where gene transcription begins are called

The nervous system develops from the endoderm.

Most fetuses can survive outside the womb after a minimum of weeks.

What is differentiation?

If your roommate smokes and she gets pregnant, what dangers would you warn her about?

All cells in an animal, with the exception of gametes, are genetically identical.

How is blood flow in the placenta maintained so that there is maximum opportunity for the exchange of materials while still keeping the blood of the mother and the baby separate?

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 Reproduction

Plant Anatomy and Nutrient Transport

Plant Reproduction and Development

Plant Responses to the Environment

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