Question 1

What type of gene expression are the ABO blood types an example of?

Accepted Answer

A) complete dominance 
B) codominance 
C) incomplete dominance 
D) recessiveness 
E) polymorphism 
A) complete dominance 
B) codominance 
C) incomplete dominance 
D) recessiveness 
E) polymorphism

Question 2

The embryonic membrane that completely encloses the embryo in a watery sac is the

Accepted Answer

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

Question 3

Damage to the mesoderm during embryological development would affect the formation of the

Accepted Answer

A) thyroid. 
B) brain. 
C) heart. 
D) teeth. 
E) urinary bladder. 
A) thyroid. 
B) brain. 
C) heart. 
D) teeth. 
E) urinary bladder.

Question 4

If the zygote splits into two separate cells,

Accepted Answer

A) identical twins result. 
B) fraternal twins result. 
C) dizygotic twinning occurs. 
D) both cells die. 
E) paternal twins result. 
A) identical twins result. 
B) fraternal twins result. 
C) dizygotic twinning occurs. 
D) both cells die. 
E) paternal twins result.

Question 5

Which gland originates as two evaginations from the duodenum?

Accepted Answer

A) anterior pituitary gland 
B) posterior pituitary gland 
C) thyroid gland 
D) adrenal glands 
E) pancreas 
A) anterior pituitary gland 
B) posterior pituitary gland 
C) thyroid gland 
D) adrenal glands 
E) pancreas

Question 6

A gene that is responsible for producing trypsin in the pancreas would be a ____ gene.

Accepted Answer

A) dominant 
B) regulatory 
C) structural 
D) recessive 
E) functional 
A) dominant 
B) regulatory 
C) structural 
D) recessive 
E) functional

Question 7

The embryonic heart

Accepted Answer

A) develops from two endothelial tubes that fuse together. 
B) consists of four chambers. 
C) has two atria but only one ventricle. 
D) doesn't beat until just prior to birth. 
E) has no passages connecting right side to left side. 
A) develops from two endothelial tubes that fuse together. 
B) consists of four chambers. 
C) has two atria but only one ventricle. 
D) doesn't beat until just prior to birth. 
E) has no passages connecting right side to left side.

Question 8

Which of the following structures originates as an evagination from the floor of the pharynx,moves into the neck,and loses its connection with the pharynx?

Accepted Answer

A) pancreas 
B) thyroid gland 
C) adrenal medulla 
D) adenohypophysis 
E) parathyroid glands 
A) pancreas 
B) thyroid gland 
C) adrenal medulla 
D) adenohypophysis 
E) parathyroid glands

Question 9

The allantois enlarges to form the

Accepted Answer

A) kidney. 
B) gonads. 
C) ureter. 
D) urinary bladder. 
E) urethra. 
A) kidney. 
B) gonads. 
C) ureter. 
D) urinary bladder. 
E) urethra.

Question 10

The inner cell mass of the blastocyst

Accepted Answer

A) consists of yolk-filled storage cells. 
B) contains cells that will form the embryo. 
C) represents the future placenta. 
D) will form the zona pellucida. 
E) contains cells that are discarded. 
A) consists of yolk-filled storage cells. 
B) contains cells that will form the embryo. 
C) represents the future placenta. 
D) will form the zona pellucida. 
E) contains cells that are discarded.

Question 11

What event separates childhood from adolescence?

Accepted Answer

A) puberty 
B) infancy 
C) formation of germ layers 
D) beginning to walk 
A) puberty 
B) infancy 
C) formation of germ layers 
D) beginning to walk

Question 12

The waxy coat of sloughed epithelial cells that covers the fetus is called

Accepted Answer

A) lanugo. 
B) fetal hair. 
C) colostrum. 
D) vernix caseosa. 
E) primary hair. 
A) lanugo. 
B) fetal hair. 
C) colostrum. 
D) vernix caseosa. 
E) primary hair.

Question 13

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.

Question 14

Which of the following characterizes the developmental age of an eight month old infant?

Accepted Answer

A) sits without support 
B) rolls from its back to its side 
C) smiles in response to people's faces 
D) pulls itself up to a standing position 
E) None of these choices is correct 
A) sits without support 
B) rolls from its back to its side 
C) smiles in response to people's faces 
D) pulls itself up to a standing position 
E) None of these choices is correct

Question 15

Most congenital birth defects are caused by

Accepted Answer

A) inherited traits. 
B) lack of oxygen to the fetus. 
C) viral infections during pregnancy. 
D) unknown causes. 
E) None of these choices is correct. 
A) inherited traits. 
B) lack of oxygen to the fetus. 
C) viral infections during pregnancy. 
D) unknown causes. 
E) None of these choices is correct.

Question 16

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 17

What is formed by closure of neural groove?

Accepted Answer

A) mesonephros 
B) mandibular processes 
C) neural tube 
D) secondary palate 
E) somites 
A) mesonephros 
B) mandibular processes 
C) neural tube 
D) secondary palate 
E) somites

Question 18

The onset of puberty is considered to be the beginning of which life stage?

Accepted Answer

A) early childhood 
B) late childhood 
C) adolescence 
D) young adult 
E) middle age 
A) early childhood 
B) late childhood 
C) adolescence 
D) young adult 
E) middle age

Question 19

Premature aging is called

Accepted Answer

A) progeria. 
B) lactation. 
C) parturition. 
D) Alzheimer's disease. 
E) dementia. 
A) progeria. 
B) lactation. 
C) parturition. 
D) Alzheimer's disease. 
E) dementia.

Question 20

Which of the following is derived from ectoderm?

Accepted Answer

A) lens of the eye 
B) thymus gland 
C) tonsils 
D) urinary bladder 
E) dermis of skin 
A) lens of the eye 
B) thymus gland 
C) tonsils 
D) urinary bladder 
E) dermis of skin

Exam 29: Development,growth,aging,and Genetics

What type of gene expression are the ABO blood types an example of?

The embryonic membrane that completely encloses the embryo in a watery sac is the

Damage to the mesoderm during embryological development would affect the formation of the

If the zygote splits into two separate cells,

Which gland originates as two evaginations from the duodenum?

A gene that is responsible for producing trypsin in the pancreas would be a ____ gene.

The embryonic heart

Which of the following structures originates as an evagination from the floor of the pharynx,moves into the neck,and loses its connection with the pharynx?

The allantois enlarges to form the

The inner cell mass of the blastocyst

What event separates childhood from adolescence?

The waxy coat of sloughed epithelial cells that covers the fetus is called

An embryo becomes a fetus about

Which of the following characterizes the developmental age of an eight month old infant?

Most congenital birth defects are caused by

Colostrum differs from milk in that it contains

What is formed by closure of neural groove?

The onset of puberty is considered to be the beginning of which life stage?

Premature aging is called

Which of the following is derived from ectoderm?

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

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