Question 1

Which of the following would NOT provide evidence for a genetic basis for aging?

Accepted Answer

A) Children of short-lived parents live shorter lives than children of long-lived parents. 
B) Cells only divide for a set number of divisions. 
C) Cell lines become nonfunctional before their maximum number of divisions is reached. 
D) Smoking and excessive alcohol intake are linked to shorter life spans. 
E) Certain genes that code for antioxidant enzymes to detoxify free radicals are present in animals that live longer. 
A) Children of short-lived parents live shorter lives than children of long-lived parents. 
B) Cells only divide for a set number of divisions. 
C) Cell lines become nonfunctional before their maximum number of divisions is reached. 
D) Smoking and excessive alcohol intake are linked to shorter life spans. 
E) Certain genes that code for antioxidant enzymes to detoxify free radicals are present in animals that live longer.

Question 2

The _______ provides nourishment for the embryo during chick development.

Accepted Answer

A) umbilical cord 
B) allantois 
C) yolk sac 
D) embryo 
E) chorion 
A) umbilical cord 
B) allantois 
C) yolk sac 
D) embryo 
E) chorion

Question 3

Which of the following is an advantage of breast-feeding?

Accepted Answer

A) All of the answer choices are advantages of breast-feeding. 
B) Colostrum is rich in proteins and antibodies. 
C) physiological benefits for the mother 
D) Suckling causes uterine contractions that help reduce the uterus to its normal size. 
E) Breast-feeding uses up calories that can help a woman return to her normal weight. 
A) All of the answer choices are advantages of breast-feeding. 
B) Colostrum is rich in proteins and antibodies. 
C) physiological benefits for the mother 
D) Suckling causes uterine contractions that help reduce the uterus to its normal size. 
E) Breast-feeding uses up calories that can help a woman return to her normal weight.

Question 4

In experiments with the roundworm Caenorhabditis elegans,researchers were able to trace the development of the generalized zygote into the specialized cells of the adult roundworm,a schematic that formed a(n)

Accepted Answer

A) homeobox. 
B) pattern formation. 
C) cytoplasmic segregation. 
D) induction. 
E) fate map. 
A) homeobox. 
B) pattern formation. 
C) cytoplasmic segregation. 
D) induction. 
E) fate map.

Question 5

In order to provide for easier birth,a newborn baby has membranous areas of skull called

Accepted Answer

A) oval windows. 
B) bursa. 
C) sutures. 
D) septa. 
E) fontanels. 
A) oval windows. 
B) bursa. 
C) sutures. 
D) septa. 
E) fontanels.

Question 6

The _____ is responsible for gas exchange in the egg of a chicken.

Accepted Answer

A) yolk sac 
B) amnion 
C) embryo 
D) umbilical cord 
E) chorion 
A) yolk sac 
B) amnion 
C) embryo 
D) umbilical cord 
E) chorion

Question 7

Which of these is not associated with development?

Accepted Answer

A) Cells divide and get larger. 
B) Cells become specialized in structure and function. 
C) Body parts are shaped and patterned into a specific form. 
D) One cell eventually becomes four sperm. 
E) Tissues and organs become arranged in the body. 
A) Cells divide and get larger. 
B) Cells become specialized in structure and function. 
C) Body parts are shaped and patterned into a specific form. 
D) One cell eventually becomes four sperm. 
E) Tissues and organs become arranged in the body.

Question 8

The blastocoel is formed during the _____ stage of development.

Accepted Answer

A) morula 
B) blastula 
C) gastrula 
D) zygote 
E) neurula 
A) morula 
B) blastula 
C) gastrula 
D) zygote 
E) neurula

Question 9

After milk production begins,it continues as long as the baby suckles,but ends otherwise.This maintenance is provided by nervous stimulation sent to the ____,which eventually causes production of ____.

Accepted Answer

A) ovaries; prolactin 
B) pituitary; prolactin 
C) hypothalamus; oxytocin 
D) ovaries; oxytocin 
E) uterus; estrogen 
A) ovaries; prolactin 
B) pituitary; prolactin 
C) hypothalamus; oxytocin 
D) ovaries; oxytocin 
E) uterus; estrogen

Question 10

During gastrulation in vertebrates,the pore created by invagination will become the

Accepted Answer

A) brain. 
B) heart. 
C) mouth. 
D) anus. 
E) ear. 
A) brain. 
B) heart. 
C) mouth. 
D) anus. 
E) ear.

Question 11

Generally only one sperm fertilizes an egg because

Accepted Answer

A) sperm compete against one another before entering and only the most fit one is accepted. 
B) sperm are so few that two are unlikely to arrive at the same time. 
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 fuses with the egg membrane,it causes the membrane to depolarize and also separates the fertilization membrane and this gap forms a barrier to any other sperm. 
A) sperm compete against one another before entering and only the most fit one is accepted. 
B) sperm are so few that two are unlikely to arrive at the same time. 
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 fuses with the egg membrane,it causes the membrane to depolarize and also separates the fertilization membrane and this gap forms a barrier to any other sperm.

Question 12

The ______ in fetal circulation allows blood from the right atrium to directly enter the left atrium.

Accepted Answer

A) umbilical cord 
B) arterial duct 
C) foramen ovale 
D) venous duct 
E) right ventricle 
A) umbilical cord 
B) arterial duct 
C) foramen ovale 
D) venous duct 
E) right ventricle

Question 13

How does a sperm penetrate an egg?

Accepted Answer

A) Enzymes in the acrosome dissolve the zona pellucida. 
B) The sperm melts its way inside,using the nucleic acids in its DNA. 
C) The forward pressure of the flagellum forces it through the plasma membrane. 
D) Spermatids are wedge-shaped and are chemically attracted to the inside cytoplasm of the egg cell. 
E) The haploid sets of chromosomes match across the membrane and this triggers the membrane to dissolve. 
A) Enzymes in the acrosome dissolve the zona pellucida. 
B) The sperm melts its way inside,using the nucleic acids in its DNA. 
C) The forward pressure of the flagellum forces it through the plasma membrane. 
D) Spermatids are wedge-shaped and are chemically attracted to the inside cytoplasm of the egg cell. 
E) The haploid sets of chromosomes match across the membrane and this triggers the membrane to dissolve.

Question 14

The human blastocyst

Accepted Answer

A) gives rise to umbilical blood vessels. 
B) contains a fluid-filled central cavity. 
C) is the expanded end of the gastrula. 
D) has three germ layers. 
E) is the fertilized egg. 
A) gives rise to umbilical blood vessels. 
B) contains a fluid-filled central cavity. 
C) is the expanded end of the gastrula. 
D) has three germ layers. 
E) is the fertilized egg.

Question 15

The afterbirth refers to the

Accepted Answer

A) expulsion of the placenta and membranes. 
B) expulsion of the uterine lining. 
C) expulsion of the amniotic membrane. 
D) expulsion of the fetus. 
E) period of time from birth to nursing. 
A) expulsion of the placenta and membranes. 
B) expulsion of the uterine lining. 
C) expulsion of the amniotic membrane. 
D) expulsion of the fetus. 
E) period of time from birth to nursing.

Question 16

Which of the following develop from the germ layer called the ectoderm?

Accepted Answer

A) skin and nervous system 
B) muscles and blood 
C) gut and pancreas 
D) nervous system and muscles 
E) reproductive and urinary 
A) skin and nervous system 
B) muscles and blood 
C) gut and pancreas 
D) nervous system and muscles 
E) reproductive and urinary

Exam 22: Development and Aging

Which of the following would NOT provide evidence for a genetic basis for aging?

The _______ provides nourishment for the embryo during chick development.

Which of the following is an advantage of breast-feeding?

In experiments with the roundworm Caenorhabditis elegans,researchers were able to trace the development of the generalized zygote into the specialized cells of the adult roundworm,a schematic that formed a(n)

In order to provide for easier birth,a newborn baby has membranous areas of skull called

The _____ is responsible for gas exchange in the egg of a chicken.

Which of these is not associated with development?

The blastocoel is formed during the _____ stage of development.

After milk production begins,it continues as long as the baby suckles,but ends otherwise.This maintenance is provided by nervous stimulation sent to the ____,which eventually causes production of ____.

During gastrulation in vertebrates,the pore created by invagination will become the

Generally only one sperm fertilizes an egg because

The ______ in fetal circulation allows blood from the right atrium to directly enter the left atrium.

How does a sperm penetrate an egg?

The human blastocyst

The afterbirth refers to the

Which of the following develop from the germ layer called the ectoderm?

The Study of Life

The Molecules of Cells

Cell Structure and Function

Membrane Structure and Function

Cell Division

Metabolism: Energy and Enzymes

Cellular Respiration

Photosynthesis

Plant Organization and Function

Plant Reproduction and Responses

Human Organization

Cardiovascular System

Lymphatic and Immune Systems

Digestive System and Nutrition

Respiratory System

Urinary System and Excretion

Nervous System

Senses

Musculoskeletal System

Endocrine System

Reproductive System

Patterns of Gene Inheritance

Chromosomal Inheritance and Genetic Disorders

Dna Structure and Control of Gene Expression

Biotechnology and Genomics

Evolution of Life

Viruses, bacteria, and Archaea

Protistans

Plants

Animals: Part I

Animals Part II

Animal Behavior

Population Ecology

Nature of Ecosystems

The Biosphere

Environmental Concerns

Filters

After milk production begins,it continues as long as the baby suckles,but ends otherwise.This maintenance is provided by nervous stimulation sent to the ,which eventually causes production of .