Question 1

At the end of the embryonic period,the embryo is about 12 inches long.

Accepted Answer

A) True 
 B)False

Question 2

Which of the following gives the correct order of layers the sperm crosses when entering the egg?

Accepted Answer

A)  corona radiata, zona pellucida, oocyte plasma membrane 
B)  zona pellucida, oocyte plasma membrane, corona radiata 
C)  oocyte plasma membrane, corona radiata, zona pellucida 
D)  corona radiata, oocyyte plasma membrane, zona pellucida 
E)  zona pellucida, corona radiata, oocyte plasma membrane 
A)  corona radiata, zona pellucida, oocyte plasma membrane 
B)  zona pellucida, oocyte plasma membrane, corona radiata 
C)  oocyte plasma membrane, corona radiata, zona pellucida 
D)  corona radiata, oocyyte plasma membrane, zona pellucida 
E)  zona pellucida, corona radiata, oocyte plasma membrane

Question 3

The sex of an individual is determined at the moment of fertilization.

Accepted Answer

A) True 
 B)False

Question 4

Which of the following is not derived from the endoderm?

Accepted Answer

A)  epithelial lining of the digestive tract 
B)  epithelial lining of the respiratory tract 
C)  glands of the digestive tract 
D)  lining of the urinary bladder 
E)  urinary system 
A)  epithelial lining of the digestive tract 
B)  epithelial lining of the respiratory tract 
C)  glands of the digestive tract 
D)  lining of the urinary bladder 
E)  urinary system

Question 5

How are the pulmonary veins and the umbilical veins similar?

Accepted Answer

A)  They are both present in an adult human. 
B)  They both carry blood to the lungs. 
C)  They both connect to the superior vena cava. 
D)  They both carry oxygen-rich blood. 
E)  They both connect to the placenta. 
A)  They are both present in an adult human. 
B)  They both carry blood to the lungs. 
C)  They both connect to the superior vena cava. 
D)  They both carry oxygen-rich blood. 
E)  They both connect to the placenta.

Question 6

When cells begin to move in the embryo in relation to other cells,this is called

Accepted Answer

A)  cleavage. 
B)  growth. 
C)  morphogenesis. 
D)  differentiation. 
E)  fertilization. 
A)  cleavage. 
B)  growth. 
C)  morphogenesis. 
D)  differentiation. 
E)  fertilization.

Question 7

Why would you predict that the blood carbon dioxide levels in a pregnant woman would fall?

Accepted Answer

A)  She has trouble breathing due to the expanding uterus. 
B)  The fetus is removing carbon dioxide from her blood. 
C)  The maternal oxygen levels are also falling. 
D)  Pregnancy creates a favorable concentration gradient between the fetal and maternal blood. 
E)  The bronchial tubes relax. 
A)  She has trouble breathing due to the expanding uterus. 
B)  The fetus is removing carbon dioxide from her blood. 
C)  The maternal oxygen levels are also falling. 
D)  Pregnancy creates a favorable concentration gradient between the fetal and maternal blood. 
E)  The bronchial tubes relax.

Question 8

The amnion is to the amniotic fluid as the allantois is to the

Accepted Answer

A)  blood cell precursors. 
B)  chorionic villi. 
C)  umbilical blood vessels. 
D)  amniotic cavity. 
E)  yolk. 
A)  blood cell precursors. 
B)  chorionic villi. 
C)  umbilical blood vessels. 
D)  amniotic cavity. 
E)  yolk.

Question 9

When the uterus begins to contract,it is almost time for the baby to be born.

Accepted Answer

A) True 
 B)False

Question 10

The adhering follicular cells that surround the egg are called the

Accepted Answer

A)  pronuclei. 
B)  zona pellucida. 
C)  corona radiata. 
D)  cortical granule cells. 
E)  outer cell mass. 
A)  pronuclei. 
B)  zona pellucida. 
C)  corona radiata. 
D)  cortical granule cells. 
E)  outer cell mass.

Question 11

Which of the following develops into the male genital ducts?

Accepted Answer

A)  epididymis 
B)  urogenital groove 
C)  cloaca 
D)  Mullerian ducts 
E)  Wolffian ducts 
A)  epididymis 
B)  urogenital groove 
C)  cloaca 
D)  Mullerian ducts 
E)  Wolffian ducts

Question 12

Which of the following is not associated with the egg?

Accepted Answer

A)  corona radiata 
B)  acrosome 
C)  zona pellucida 
D)  cortical granule 
E)  fertilization membrane 
A)  corona radiata 
B)  acrosome 
C)  zona pellucida 
D)  cortical granule 
E)  fertilization membrane

Question 13

Does a woman ovulate during pregnancy? Why or why not?

Accepted Answer

A)  No, because she doesn't have any more follicles in the ovaries. 
B)  No, because negative feedback on the hypothalamus prevents new follicles from maturing. 
C)  No, because the developing embryo prevents any new blastulas from implanting. 
D)  Yes, because the uterine cycle continues to function. 
E)  Yes, because the ovarian cycle continues to function. 
A)  No, because she doesn't have any more follicles in the ovaries. 
B)  No, because negative feedback on the hypothalamus prevents new follicles from maturing. 
C)  No, because the developing embryo prevents any new blastulas from implanting. 
D)  Yes, because the uterine cycle continues to function. 
E)  Yes, because the ovarian cycle continues to function.

Question 14

If a fetus contains an X and a Y chromosome but a defective SRY gene,they will develop

Accepted Answer

A)  into an anatomical female because testosterone is not present. 
B)  into an anatomical male because testosterone is not present. 
C)  into an anatomical female because testosterone is present. 
D)  into an anatomical male because testosterone is present. 
E)  into a hermaphrodite due to the presence of estrogen and testosterone. 
A)  into an anatomical female because testosterone is not present. 
B)  into an anatomical male because testosterone is not present. 
C)  into an anatomical female because testosterone is present. 
D)  into an anatomical male because testosterone is present. 
E)  into a hermaphrodite due to the presence of estrogen and testosterone.

Question 15

At what point during development does the embryo form three germ layers?

Accepted Answer

A)  when it begins cleavage 
B)  when the nervous system develops 
C)  when it forms the gastrula 
D)  when it forms the inner cell mass 
E)  when it becomes recognizable as human 
A)  when it begins cleavage 
B)  when the nervous system develops 
C)  when it forms the gastrula 
D)  when it forms the inner cell mass 
E)  when it becomes recognizable as human

Question 16

Which of the following would be considered a poor health practice for a woman planning to get pregnant or already pregnant?

Accepted Answer

A)  updating all vaccinations 
B)  treating all sexually transmitted diseases 
C)  obtaining more folic acid 
D)  eating enough to feed two people 
E)  moderate exercise 
A)  updating all vaccinations 
B)  treating all sexually transmitted diseases 
C)  obtaining more folic acid 
D)  eating enough to feed two people 
E)  moderate exercise

Question 17

During fertilization,several sperm penetrate the corona radiata.

Accepted Answer

A) True 
 B)False

Question 18

The embryonic disk becomes the inner cell mass after gastrulation.

Accepted Answer

A) True 
 B)False

Question 19

Development ceases at birth.

Accepted Answer

A) True 
 B)False

Question 20

Which part of the sperm contains the chromosomes?

Accepted Answer

A)  tail 
B)  middle piece 
C)  head 
D)  cell membrane 
E)  flagella 
A)  tail 
B)  middle piece 
C)  head 
D)  cell membrane 
E)  flagella

Exam 18: Development and Aging

At the end of the embryonic period,the embryo is about 12 inches long.

Which of the following gives the correct order of layers the sperm crosses when entering the egg?

The sex of an individual is determined at the moment of fertilization.

Which of the following is not derived from the endoderm?

How are the pulmonary veins and the umbilical veins similar?

When cells begin to move in the embryo in relation to other cells,this is called

Why would you predict that the blood carbon dioxide levels in a pregnant woman would fall?

The amnion is to the amniotic fluid as the allantois is to the

When the uterus begins to contract,it is almost time for the baby to be born.

The adhering follicular cells that surround the egg are called the

Which of the following develops into the male genital ducts?

Which of the following is not associated with the egg?

Does a woman ovulate during pregnancy? Why or why not?

If a fetus contains an X and a Y chromosome but a defective SRY gene,they will develop

At what point during development does the embryo form three germ layers?

Which of the following would be considered a poor health practice for a woman planning to get pregnant or already pregnant?

During fertilization,several sperm penetrate the corona radiata.

The embryonic disk becomes the inner cell mass after gastrulation.

Development ceases at birth.

Which part of the sperm contains the chromosomes?

Exploring Life and Science

Chemistry of Life

Cell Structure and Function

Organization and Regulation of Body Systems

Cardiovascular System: Heart and Blood Vessels

Cardiovascular System: Blood

The Lymphatic and Immune Systems

Infectious Diseases

Digestive System and Nutrition

Respiratory System

Urinary System

Skeletal System

Muscular System

Nervous System

Senses

Endocrine System

Reproductive System

Patterns of Chromosome Inheritance

Cancer

Patterns of Genetic Inheritance

Dna Biology and Technology

Human Evolution

Ecology and the Nature of Ecosystems

Human Interactions With the Biosphere

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