Question 1

The extraembryonic membrane that sends blood vessels into the endometrium is the chorion. True or False?

Accepted Answer

A) True 
 B)False

Question 2

At which stage is the human embryo most susceptible to damage?

Accepted Answer

A) just before birth 
B) during cleavage 
C) during organogenesis 
D) during the fourth and fifth months 
E) during the last trimester 
A) just before birth 
B) during cleavage 
C) during organogenesis 
D) during the fourth and fifth months 
E) during the last trimester

Question 3

The dorsal lip of the blastopore:

Accepted Answer

A) becomes the neural tube. 
B) becomes the digestive tract. 
C) induces the surrounding cells to differentiate. 
D) forms the chorion. 
E) lacks the genes necessary to develop the embryo. 
A) becomes the neural tube. 
B) becomes the digestive tract. 
C) induces the surrounding cells to differentiate. 
D) forms the chorion. 
E) lacks the genes necessary to develop the embryo.

Question 4

Which of the following is the result of gastrulation?

Accepted Answer

A) a morula 
B) a zygote 
C) the formation of organs 
D) a three-layered embryo 
E) a blastula 
A) a morula 
B) a zygote 
C) the formation of organs 
D) a three-layered embryo 
E) a blastula

Question 5

The mother's part of the placenta is derived from the ________.

Accepted Answer

The answer of The mother's part of the placenta is...

Question 6

What is differentiation?

Accepted Answer

A) the process in which different tissues specialize into specific organs 
B) the process in which different cells develop into different cell types 
C) the process in which different organs specialize in function 
D) the process in which the embryo specializes into different sexual organs 
A) the process in which different tissues specialize into specific organs 
B) the process in which different cells develop into different cell types 
C) the process in which different organs specialize in function 
D) the process in which the embryo specializes into different sexual organs

Question 7

A human embryo has webbed fingers. Why are human babies not usually born with webbed fingers?

Accepted Answer

During development,

Question 8

-The structure labeled 2 is the:

Accepted Answer

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

Question 9

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

Accepted Answer

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

Question 10

At the blastula stage, the embryo consists of:

Accepted Answer

A) a solid mass of cells, each the size of the zygote. 
B) three differentiated layers of cells. 
C) a hollow ball of cells. 
D) cells that have different DNA content. 
E) a cluster of cells that are much larger than normal cells. 
A) a solid mass of cells, each the size of the zygote. 
B) three differentiated layers of cells. 
C) a hollow ball of cells. 
D) cells that have different DNA content. 
E) a cluster of cells that are much larger than normal cells.

Question 11

All the cells in an animal are genetically identical. True or False?

Accepted Answer

A) True 
 B)False

Question 12

The amnion forms the watery environment that encloses the embryo. True or False?

Accepted Answer

A) True 
 B)False

Question 13

The small hollow ball of cells in early development is the zygote. True or False?

Accepted Answer

A) True 
 B)False

Question 14

A recent series of TV commercials promoted the idea that a woman who wants to have a healthy baby must begin to eat well and avoid some medications and alcohol before she knows she is pregnant. Why?

Accepted Answer

Gastrulation and differentiation of embr

Question 15

Proteins called ________ bind to the DNA near the promoter regions where gene transcription begins.

Accepted Answer

transcript

Question 16

Adult stem cells derived from fat cells have been used to develop muscle and nerve cells in the lab. How is this possible?

Accepted Answer

Since all cells contain all th

Question 17

At what stage does a human embryo implant in the uterus?

Accepted Answer

A) gastrula 
B) embryonic disc 
C) morula 
D) blastocyst 
E) fetal 
A) gastrula 
B) embryonic disc 
C) morula 
D) blastocyst 
E) fetal

Question 18

In humans, implantation occurs:

Accepted Answer

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

Question 19

Which portion of the blastula becomes the embryonic placenta?

Accepted Answer

A) chorion 
B) embryonic disc 
C) inner cell mass 
D) primitive streak 
E) yolk sac 
A) chorion 
B) embryonic disc 
C) inner cell mass 
D) primitive streak 
E) yolk sac

Question 20

During the embryonic stage, a hollow ball of cells is known as a:

Accepted Answer

A) morula. 
B) blastula. 
C) gastrula. 
D) larva. 
E) blastopore. 
A) morula. 
B) blastula. 
C) gastrula. 
D) larva. 
E) blastopore.

Exam 42: Animal Development

The extraembryonic membrane that sends blood vessels into the endometrium is the chorion. True or False?

At which stage is the human embryo most susceptible to damage?

The dorsal lip of the blastopore:

Which of the following is the result of gastrulation?

The mother's part of the placenta is derived from the ________.

What is differentiation?

A human embryo has webbed fingers. Why are human babies not usually born with webbed fingers?

-The structure labeled 2 is the:

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

At the blastula stage, the embryo consists of:

All the cells in an animal are genetically identical. True or False?

The amnion forms the watery environment that encloses the embryo. True or False?

The small hollow ball of cells in early development is the zygote. True or False?

A recent series of TV commercials promoted the idea that a woman who wants to have a healthy baby must begin to eat well and avoid some medications and alcohol before she knows she is pregnant. Why?

Proteins called ________ bind to the DNA near the promoter regions where gene transcription begins.

Adult stem cells derived from fat cells have been used to develop muscle and nerve cells in the lab. How is this possible?

At what stage does a human embryo implant in the uterus?

In humans, implantation occurs:

Which portion of the blastula becomes the embryonic placenta?

During the embryonic stage, a hollow ball of cells is known as a:

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

The Continuity of Life: Cellular 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 Amidst 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

How Do Ecosystems Work

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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