Question 1

The specific location of a gene on a chromosome is its

Accepted Answer

A)  homolog. 
B)  genotype. 
C)  phenotype. 
D)  allele. 
E)  locus. 
A)  homolog. 
B)  genotype. 
C)  phenotype. 
D)  allele. 
E)  locus.

Question 2

Which of the following is mismatched?

Accepted Answer

A)  foramen ovale - ligamentum ovale 
B)  ductus arteriosus - ligamentum arteriosus 
C)  ductus venosus - ligamentum venosus 
D)  umbilical vein - ligamentum teres of the liver 
E)  umbilical arteries - cords of umbilical arteries 
A)  foramen ovale - ligamentum ovale 
B)  ductus arteriosus - ligamentum arteriosus 
C)  ductus venosus - ligamentum venosus 
D)  umbilical vein - ligamentum teres of the liver 
E)  umbilical arteries - cords of umbilical arteries

Question 3

Cells of the neuroectoderm become all of the following EXCEPT the

Accepted Answer

A)  brain 
B)  spinal cord 
C)  postganglionic autonomic neurons 
D)  posterior pituitary gland 
A)  brain 
B)  spinal cord 
C)  postganglionic autonomic neurons 
D)  posterior pituitary gland

Question 4

Organogenesis is generally completed by day _____ of development.

Accepted Answer

A)  20 
B)  30 
C)  45 
D)  60 
E)  75 
A)  20 
B)  30 
C)  45 
D)  60 
E)  75

Question 5

Colostrum differs from milk in that it contains

Accepted Answer

A)  little fat. 
B)  no antibodies. 
C)  more protein. 
D)  more lactose. 
E)  more fat. 
A)  little fat. 
B)  no antibodies. 
C)  more protein. 
D)  more lactose. 
E)  more fat.

Question 6

A mistake during segregation of chromosomes is called

Accepted Answer

A)  deletion. 
B)  duplication. 
C)  nondisjunction. 
D)  point mutation. 
E)  aneuploidy 
A)  deletion. 
B)  duplication. 
C)  nondisjunction. 
D)  point mutation. 
E)  aneuploidy

Question 7

One reason for the increased incidence of cancer with aging is a decrease in

Accepted Answer

A)  urine output. 
B)  cardiac output. 
C)  red blood cells. 
D)  functioning of T lymphocytes. 
E)  functioning neutrophils. 
A)  urine output. 
B)  cardiac output. 
C)  red blood cells. 
D)  functioning of T lymphocytes. 
E)  functioning neutrophils.

Question 8

The embryo is most sensitive to outside influences that can cause malformations during the

Accepted Answer

A)  first two weeks after fertilization. 
B)  third to the ninth weeks of development. 
C)  ninth to the sixteenth weeks of development. 
D)  twelfth to the twentieth weeks of development. 
E)  twenty-first to twenty-sixth week of development. 
A)  first two weeks after fertilization. 
B)  third to the ninth weeks of development. 
C)  ninth to the sixteenth weeks of development. 
D)  twelfth to the twentieth weeks of development. 
E)  twenty-first to twenty-sixth week of development.

Question 9

The hormone responsible for milk production is

Accepted Answer

A)  estrogen. 
B)  progesterone. 
C)  oxytocin. 
D)  prolactin. 
E)  FSH. 
A)  estrogen. 
B)  progesterone. 
C)  oxytocin. 
D)  prolactin. 
E)  FSH.

Question 10

When the dominant allele does not completely mask the effects of the recessive allele in the heterozygote, it is called

Accepted Answer

A)  dominance. 
B)  polygenic dominance. 
C)  codominance. 
D)  incomplete dominance. 
E)  corecessive. 
A)  dominance. 
B)  polygenic dominance. 
C)  codominance. 
D)  incomplete dominance. 
E)  corecessive.

Question 11

In humans, somatic cells have ____ chromosomes, while reproductive cells (gametes) have ____.

Accepted Answer

A)  23; 46 
B)  92; 46 
C)  46; 23 
D)  46; 69 
E)  92; 23 
A)  23; 46 
B)  92; 46 
C)  46; 23 
D)  46; 69 
E)  92; 23

Question 12

The type of fetal monitoring that uses sound waves to visualize the developing fetus is

Accepted Answer

A)  fetoscopy. 
B)  ultrasound. 
C)  amniocentesis. 
D)  chorionic villi sampling. 
E)  auscultation. 
A)  fetoscopy. 
B)  ultrasound. 
C)  amniocentesis. 
D)  chorionic villi sampling. 
E)  auscultation.

Question 13

The most significant complication of infant prematurity is infant respiratory distress syndrome, which occurs because very young premature infants cannot produce ______________.

Accepted Answer

A)  surfactant 
B)  blood 
C)  oxygen 
D)  erythropoietin 
E)  growth hormone 
A)  surfactant 
B)  blood 
C)  oxygen 
D)  erythropoietin 
E)  growth hormone

Question 14

What genetic disorder is the inability to produce normal hemoglobin?

Accepted Answer

A)  albinism 
B)  sickle-cell disease 
C)  hemophilia 
D)  Down syndrome 
E)  achondroplasia 
A)  albinism 
B)  sickle-cell disease 
C)  hemophilia 
D)  Down syndrome 
E)  achondroplasia

Question 15

Which of the following organ systems is derived from all three germ layers?

Accepted Answer

A)  nervous 
B)  cardiovascular 
C)  endocrine 
D)  integumentary 
E)  skeletal 
A)  nervous 
B)  cardiovascular 
C)  endocrine 
D)  integumentary 
E)  skeletal

Question 16

Which of the following structures is NOT involved in the formation of the face?

Accepted Answer

A)  apical ectodermal ridges 
B)  frontonasal process 
C)  maxillary processes 
D)  mandibular processes 
A)  apical ectodermal ridges 
B)  frontonasal process 
C)  maxillary processes 
D)  mandibular processes

Question 17

Germ layers form during the ____ period while organ systems mature during the ____ period.

Accepted Answer

A)  embryonic; fetal 
B)  prenatal; neonatal 
C)  germinal; embryonic 
D)  germinal; fetal 
E)  fetal; germinal 
A)  embryonic; fetal 
B)  prenatal; neonatal 
C)  germinal; embryonic 
D)  germinal; fetal 
E)  fetal; germinal

Question 18

Cryptorchidism

Accepted Answer

A)  is the failure of the testes to descend into the scrotal sac. 
B)  may be due to excessive amounts of testosterone in the fetus. 
C)  has no effect on fertility. 
D)  results in feminization of the male fetus. 
E)  is the lack of testes. 
A)  is the failure of the testes to descend into the scrotal sac. 
B)  may be due to excessive amounts of testosterone in the fetus. 
C)  has no effect on fertility. 
D)  results in feminization of the male fetus. 
E)  is the lack of testes.

Question 19

One component of brain death is defined as

Accepted Answer

A)  loss of reflexes. 
B)  lack of spontaneous movement. 
C)  a flat electroencephalogram (EEG). 
A)  loss of reflexes. 
B)  lack of spontaneous movement. 
C)  a flat electroencephalogram (EEG).

Question 20

An embryo becomes a fetus about

Accepted Answer

A)  14 days after fertilization. 
B)  30 days after fertilization. 
C)  60 days after fertilization. 
D)  3 months after fertilization. 
E)  6 months after fertilization. 
A)  14 days after fertilization. 
B)  30 days after fertilization. 
C)  60 days after fertilization. 
D)  3 months after fertilization. 
E)  6 months after fertilization.

Exam 29: Development, Growth, Aging, and Genetics

The specific location of a gene on a chromosome is its

Which of the following is mismatched?

Cells of the neuroectoderm become all of the following EXCEPT the

Organogenesis is generally completed by day _____ of development.

Colostrum differs from milk in that it contains

A mistake during segregation of chromosomes is called

One reason for the increased incidence of cancer with aging is a decrease in

The embryo is most sensitive to outside influences that can cause malformations during the

The hormone responsible for milk production is

When the dominant allele does not completely mask the effects of the recessive allele in the heterozygote, it is called

In humans, somatic cells have ____ chromosomes, while reproductive cells (gametes) have ____.

The type of fetal monitoring that uses sound waves to visualize the developing fetus is

The most significant complication of infant prematurity is infant respiratory distress syndrome, which occurs because very young premature infants cannot produce ______________.

What genetic disorder is the inability to produce normal hemoglobin?

Which of the following organ systems is derived from all three germ layers?

Which of the following structures is NOT involved in the formation of the face?

Germ layers form during the ____ period while organ systems mature during the ____ period.

Cryptorchidism

One component of brain death is defined as

An embryo becomes a fetus about

The Human Organism

The Chemical Basis of Life

Cell Biology

Tissues

Integumentary System

Skeletal System: Bones and Bone Tissue

Skeletal System: Gross Anatomy

Joints and Movement

Muscular System: Histology and Physiology

Muscular System: Gross Anatomy

Functional Organization of Nervous Tissue

Spinal Cord and Spinal Nerves

Brain and Cranial Nerves

Integration of Nervous System Functions

The Special Senses

Autonomic Nervous System

Functional Organization of the Endocrine System

Endocrine Glands

Cardiovascular System: Blood

Cardiovascular System: the Heart

Cardiovascular System: Blood Vessels and Circulation

Lymphatic System and Immunity

Respiratory System

Digestive System

Nutrition, Metabolism, and Temperature Regulation

Urinary System

Water, Electrolyte, and Acid-Based Balance

Reproductive System

Filters

In humans, somatic cells have chromosomes, while reproductive cells (gametes) have .

Germ layers form during the period while organ systems mature during the period.