Question 1

The pre-natal period begins with the ____.

Accepted Answer

A)  ​zygote 
B)  ​blastocyst 
C)  ​embryo 
D)  ​fetus 
E)  ​infant 
A)  ​zygote 
B)  ​blastocyst 
C)  ​embryo 
D)  ​fetus 
E)  ​infant

Question 2

Diffusion of morphogens influence the differential expression of other genes such as __________, which govern the formation of specific body parts.

Accepted Answer

The answer of Diffusion of morphogens influence the differential expression...

Question 3

During gastrulation, three tissue layers form: the outer __________, the inner __________, and the __________ in between the first two layers.

Accepted Answer

ectoderm;

Question 4

Human milk contains _____.

Accepted Answer

A)  ​calcium only 
B)  ​antibodies only 
C)  ​calcium and protein, but not antibodies 
D)  ​sugar and calcium, but not protein 
E)  ​calcium, antibodies, sugar, and protein 
A)  ​calcium only 
B)  ​antibodies only 
C)  ​calcium and protein, but not antibodies 
D)  ​sugar and calcium, but not protein 
E)  ​calcium, antibodies, sugar, and protein

Question 5

Select the correct sequence of animal developmental events.

Accepted Answer

A)  ​fertilization → cleavage → gastrula → blastula 
B)  ​fertilization → cleavage → blastula → gastrula 
C)  ​fertilization → blastula → cleavage → gastrula 
D)  ​fertilization → gastrula → blastula → cleavage 
E)  ​fertilization → blastula → gastrula → cleavage 
A)  ​fertilization → cleavage → gastrula → blastula 
B)  ​fertilization → cleavage → blastula → gastrula 
C)  ​fertilization → blastula → cleavage → gastrula 
D)  ​fertilization → gastrula → blastula → cleavage 
E)  ​fertilization → blastula → gastrula → cleavage

Question 6

An evolutionary model of animal development indicates that _____.

Accepted Answer

A)  ​differentiation is positional within a zygote 
B)  ​homeotic genes are not universal among animals 
C)  ​homeotic genes are found only in fruit flies, where they are responsible for odd placement of appendages 
D)  ​new genetic lines are produced less by modification than by unique mutation 
E)  ​somitesform as blocks of genes in cells randomly distributed throughout the body 
A)  ​differentiation is positional within a zygote 
B)  ​homeotic genes are not universal among animals 
C)  ​homeotic genes are found only in fruit flies, where they are responsible for odd placement of appendages 
D)  ​new genetic lines are produced less by modification than by unique mutation 
E)  ​somitesform as blocks of genes in cells randomly distributed throughout the body

Question 7

Respond to the following statements with reference to the five terms listed below.​
-Cleavage produces a(n) __________ stage embryo.
A)​zygote
B)​blastula
C)​cleavage
D)​gastrula
E)​somites

Accepted Answer

The answer of Respond to the following statements with reference...

Question 8

Respond to the following statements with reference to the five terms below.​
-controlled cell death

Accepted Answer

A)  	visible marker of the site where an amphibian's body axis will be established and where gastrulation will begin 
B)  	the formation of three embryonic tissue layers 
C)  	the fusion of male and female nuclei 
D)  	the entire body divides transversely; each half grows and regenerates the missing part 
E)  	selective gene expression results in different cell types
F) 	subdividing of the zygote by mitosis; no growth occurs
G) 	region of zygote that has less yolk and is pigmented
H) 	an embryonic stage of development that has three primary tissue layers before organogenesis begins
I) 	the formation of organs
J) 	one body part develops in response to signals from an adjacent part
K) 	the growth, shaping, and spatial coordination of tissues and organs so that a predefined pattern of the whole organism results
L) 	occurs in the formation of the human hand 
A)  	visible marker of the site where an amphibian's body axis will be established and where gastrulation will begin 
B)  	the formation of three embryonic tissue layers 
C)  	the fusion of male and female nuclei 
D)  	the entire body divides transversely; each half grows and regenerates the missing part 
E)  	selective gene expression results in different cell types
F) 	subdividing of the zygote by mitosis; no growth occurs
G) 	region of zygote that has less yolk and is pigmented
H) 	an embryonic stage of development that has three primary tissue layers before organogenesis begins
I) 	the formation of organs
J) 	one body part develops in response to signals from an adjacent part
K) 	the growth, shaping, and spatial coordination of tissues and organs so that a predefined pattern of the whole organism results
L) 	occurs in the formation of the human hand

Question 9

Adequate intake of ____ by a mother-to-be before and during early pregnancy may reduce the risk of spina bifida and other serious neural tube defects.

Accepted Answer

A)  ​carbohydrates 
B)  ​folic acid 
C)  ​calcium 
D)  ​vitamin C 
E)  ​sodium 
A)  ​carbohydrates 
B)  ​folic acid 
C)  ​calcium 
D)  ​vitamin C 
E)  ​sodium

Question 10

The hormone ____ is involved in a positive feedback cycle that results in strong uterine contractions during labor.

Accepted Answer

A)  ​estrogen 
B)  ​oxytocin 
C)  ​cortisol 
D)  ​progesterone 
E)  ​prolactin 
A)  ​estrogen 
B)  ​oxytocin 
C)  ​cortisol 
D)  ​progesterone 
E)  ​prolactin

Question 11

Respond to the following statements with reference to the five terms listed below.​
-Its cellular descendents give rise to all tissue and organs.

Accepted Answer

A) ​zygote 
B) ​blastula 
C) ​cleavage 
D) ​gastrula 
E) ​somites 
A) ​zygote 
B) ​blastula 
C) ​cleavage 
D) ​gastrula 
E) ​somites

Question 12

Which of the following is the first stage in reproduction and development?

Accepted Answer

A)  ​cleavage 
B)  ​gamete formation 
C)  ​gastrula formation 
D)  ​zygote formation 
E)  ​blastula formation 
A)  ​cleavage 
B)  ​gamete formation 
C)  ​gastrula formation 
D)  ​zygote formation 
E)  ​blastula formation

Question 13

During days 8 and 9 after fertilization in humans, ____.

Accepted Answer

A)  ​amnion cleavage begins 
B)  ​a blastocyst forms 
C)  ​an embryonic disk is formed 
D)  ​implantation occurs 
E)  ​gastrulationoccurs 
A)  ​amnion cleavage begins 
B)  ​a blastocyst forms 
C)  ​an embryonic disk is formed 
D)  ​implantation occurs 
E)  ​gastrulationoccurs

Question 14

Respond to the following statements with reference to the five terms below.​
-gastrulation

Accepted Answer

A) ​somites 
B) ​blastomeres 
C) ​ectoderm 
D) ​mesoderm 
E) ​endoderm 
A) ​somites 
B) ​blastomeres 
C) ​ectoderm 
D) ​mesoderm 
E) ​endoderm

Question 15

Use the figure above showing the process of gastrulation to answer the following question.
-The letter "C" in the accompanying figure represents ____.

Accepted Answer

A)  ectoderm​ 
B)  ​endoderm 
C)  ​mesoderm 
D)  ​neural plate 
E)  ​yolk 
A)  ectoderm​ 
B)  ​endoderm 
C)  ​mesoderm 
D)  ​neural plate 
E)  ​yolk

Question 16

The bicoid protein of a fruit fly is an example of _____.

Accepted Answer

A)  ​embryonic induction 
B)  ​epigenetics 
C)  ​differentiation 
D)  ​amorphogen 
E)  ​assimilation 
A)  ​embryonic induction 
B)  ​epigenetics 
C)  ​differentiation 
D)  ​amorphogen 
E)  ​assimilation

Question 17

Nutrients and antibodies move across the placenta from mother to embryo or fetus, as do __________, which can cause birth defects.

Accepted Answer

The answer of Nutrients and antibodies move across the placenta...

Question 18

What would happen if human chorionic gonadotropin levels did not rise adequately during pregnancy?

Accepted Answer

​The role of human chorionic g

Question 19

Which human extraembryonic membrane forms the blood vessels of the umbilical cord?

Accepted Answer

A)  ​amnion 
B)  ​yolk sac 
C)  ​chorion 
D)  ​allantois 
E)  ​protein coat 
A)  ​amnion 
B)  ​yolk sac 
C)  ​chorion 
D)  ​allantois 
E)  ​protein coat

Question 20

Gastrulation is controlled by signal-sending cells that cause movement of neighboring cells, a process called __________.

Accepted Answer

​embryonic

Exam 42: Animal Development

The pre-natal period begins with the ____.

Diffusion of morphogens influence the differential expression of other genes such as __________, which govern the formation of specific body parts.

During gastrulation, three tissue layers form: the outer __________, the inner __________, and the __________ in between the first two layers.

Human milk contains _____.

Select the correct sequence of animal developmental events.

An evolutionary model of animal development indicates that _____.

Respond to the following statements with reference to the five terms listed below.​ -Cleavage produces a(n) __________ stage embryo. A)​zygote B)​blastula C)​cleavage D)​gastrula E)​somites

Respond to the following statements with reference to the five terms below.​ -controlled cell death

Adequate intake of ____ by a mother-to-be before and during early pregnancy may reduce the risk of spina bifida and other serious neural tube defects.

The hormone ____ is involved in a positive feedback cycle that results in strong uterine contractions during labor.

Respond to the following statements with reference to the five terms listed below.​ -Its cellular descendents give rise to all tissue and organs.

Which of the following is the first stage in reproduction and development?

During days 8 and 9 after fertilization in humans, ____.

Respond to the following statements with reference to the five terms below.​ -gastrulation

Use the figure above showing the process of gastrulation to answer the following question. -The letter "C" in the accompanying figure represents ____.

The bicoid protein of a fruit fly is an example of _____.

Nutrients and antibodies move across the placenta from mother to embryo or fetus, as do __________, which can cause birth defects.

What would happen if human chorionic gonadotropin levels did not rise adequately during pregnancy?

Which human extraembryonic membrane forms the blood vessels of the umbilical cord?

Gastrulation is controlled by signal-sending cells that cause movement of neighboring cells, a process called __________.

Invitation to Biology

Lifes Chemical Basis

Molecules of Life

Cell Structure and Function

Ground Rules of Metabolism

Where It Starts - Photosynthesis

How Cells Release Chemical Energy

Dna Structure and Function

From Dna to Protein

Gene Control

How Cells Reproduce

Meiosis and Sexual Reproduction

Observing Patterns in Inherited Traits

Chromosomes and Human Inheritance

Studying and Manipulating Genomes

Evidence of Evolution

Processes of Evolution

Organizating Information About Species

Lifes Origin and Early Evolution

Viruses - Bacteria - and Archaea

Protists - the Simplest Eukaryotes

The Land Plants

Fungi

Animal Evolution - the Invertibrates

Animal Evolution - the Chordates

Human Evolution

Plant Tissues

Plant Nutrition and Transport

Life Cycles of Flowering Plants

Communication Strategies in Plants

Animal Tissues

Neural Control

Sensory Perception

Endocrine Control

Structural Support and Movement

Circulation

Immunity

Respiration

Digestion and Nutrition

Maintaining the Internal Environment

Animal Reproductive Systems

Animal Behavior

Filters

During gastrulation, three tissue layers form: the outer , the inner , and the __ in between the first two layers.

Respond to the following statements with reference to the five terms listed below. -Cleavage produces a(n) __________ stage embryo. A)zygote B)blastula C)cleavage D)gastrula E)somites

Respond to the following statements with reference to the five terms below. -controlled cell death

Respond to the following statements with reference to the five terms listed below. -Its cellular descendents give rise to all tissue and organs.

Respond to the following statements with reference to the five terms below. -gastrulation