Question 1

List the three embryonic germ layers and indicate a structure that forms from each layer.

Accepted Answer

Ectoderm layer: nervous system, epidermi

Question 2

Which one of the following structures is derived from the ectoderm?

Accepted Answer

A)  gut lining 
B)  nervous system 
C)  lungs 
D)  bones 
E)  bladder lining 
A)  gut lining 
B)  nervous system 
C)  lungs 
D)  bones 
E)  bladder lining

Question 3

Implantation occurs during the

Accepted Answer

A)  fertilization. 
B)  first week. 
C)  second week. 
D)  second month. 
E)  fourth month. 
A)  fertilization. 
B)  first week. 
C)  second week. 
D)  second month. 
E)  fourth month.

Question 4

Some of the changes that are attributed to aging are actually brought about by poor health habits. One of these is osteoporosis, which could be prevented by

Accepted Answer

A)  adequate calcium intake and eating a high-protein diet. 
B)  avoiding cigarettes, an adequate calcium intake, and exercise. 
C)  exercise and a high-protein diet. 
D)  drinking adequate amounts of water, and exercising. 
E)  a low-fat and protein diet. 
A)  adequate calcium intake and eating a high-protein diet. 
B)  avoiding cigarettes, an adequate calcium intake, and exercise. 
C)  exercise and a high-protein diet. 
D)  drinking adequate amounts of water, and exercising. 
E)  a low-fat and protein diet.

Question 5

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 6

Which of the following describes the process in which cells become specialized in structure and function?

Accepted Answer

A)  development 
B)  pattern formation 
C)  cellular differentiation 
D)  morphogenesis 
E)  embryology 
A)  development 
B)  pattern formation 
C)  cellular differentiation 
D)  morphogenesis 
E)  embryology

Question 7

Milk production is triggered in breasts by which hormone? Which organ releases this hormone?

Accepted Answer

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

Exam 22: Development and Aging

List the three embryonic germ layers and indicate a structure that forms from each layer.

Which one of the following structures is derived from the ectoderm?

Implantation occurs during the

Some of the changes that are attributed to aging are actually brought about by poor health habits. One of these is osteoporosis, which could be prevented by

The afterbirth refers to the

Which of the following describes the process in which cells become specialized in structure and function?

Milk production is triggered in breasts by which hormone? Which organ releases this hormone?

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 Basis of Inheritance

Dna Structure and Gene Expression

Biotechnology and Genomics

Evolution of Life

Microbiology

Protists and Fungi

Plants

Animals: the Invertebrates

Animals: Chordates and Vertebrates

Behavioral Ecology

Population and Community Ecology

Nature of Ecosystems

Major Ecosystems of the Biosphere

Conservation Biology

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