Question 1

Most of the homeostatic functions in the body are regulated by positive feedback loops.

Accepted Answer

A) True 
 B)False

Question 2

The basement membrane of epithelial tissues produces a waterproof barrier of cells to protect the tissue above it.

Accepted Answer

A) True 
 B)False

Question 3

Why are negative feedback loops more effective at maintaining homeostasis than positive feedback loops?

Accepted Answer

Negative loops counteract a stimulus to

Question 4

The tissue in the photograph is

Accepted Answer

A)  stratified epithelium. 
B)  connective tissue. 
C)  skeletal muscle. 
D)  simple epithelium. 
E)  nerve tissue. 
A)  stratified epithelium. 
B)  connective tissue. 
C)  skeletal muscle. 
D)  simple epithelium. 
E)  nerve tissue.

Question 5

Which of the following controls the temperature in endothermic animals?

Accepted Answer

A)  Cerebral cortex 
B)  Hypothalamus 
C)  Reflexive skeletal muscles 
D)  Autonomic nervous system 
E)  Positive feedback systems 
A)  Cerebral cortex 
B)  Hypothalamus 
C)  Reflexive skeletal muscles 
D)  Autonomic nervous system 
E)  Positive feedback systems

Question 6

What is the primary reason internal homeostasis must be maintained?

Accepted Answer

A)  Wide swings in the internal environment interfere with normal metabolic reactions. 
B)  Enzymes must retain their correct three- dimensional structure. 
C)  Homeostasis prevents the wasting of stockpiles of coenzymes. 
D)  Most organisms have not evolved mechanisms to control positive feedback systems. 
E)  Unregulated variations cause the cells' DNA to mutate. 
A)  Wide swings in the internal environment interfere with normal metabolic reactions. 
B)  Enzymes must retain their correct three- dimensional structure. 
C)  Homeostasis prevents the wasting of stockpiles of coenzymes. 
D)  Most organisms have not evolved mechanisms to control positive feedback systems. 
E)  Unregulated variations cause the cells' DNA to mutate.

Question 7

How are cardiac and smooth muscles similar?

Accepted Answer

A)  Both have only thin protein filaments. 
B)  Both are typically under conscious control. 
C)  Both are connected to bones. 
D)  Both are involuntary. 
E)  Both use cyclic adenosine monophosphate (cAMP) as an energy source. 
A)  Both have only thin protein filaments. 
B)  Both are typically under conscious control. 
C)  Both are connected to bones. 
D)  Both are involuntary. 
E)  Both use cyclic adenosine monophosphate (cAMP) as an energy source.

Question 8

The maintenance of internal conditions within narrow ranges is known as homeostasis.

Accepted Answer

A) True 
 B)False

Question 9

The digestive and respiratory tracts contain muscle.

Accepted Answer

The answer of The digestive and respiratory tracts contain muscle....

Question 10

Which cells are designed to conduct electrical impulses?

Accepted Answer

A)  Glial cells 
B)  Nerve tissue 
C)  Adipose cells 
D)  Connective tissue 
E)  Skeletal muscle cells 
A)  Glial cells 
B)  Nerve tissue 
C)  Adipose cells 
D)  Connective tissue 
E)  Skeletal muscle cells

Question 11

Which tissue helps endotherms maintain body temperature in cool weather?

Accepted Answer

A)  Adipose 
B)  Simple epithelium 
C)  Cartilage 
D)  Bone 
E)  Dense connective 
A)  Adipose 
B)  Simple epithelium 
C)  Cartilage 
D)  Bone 
E)  Dense connective

Question 12

Which tissue is characterized by a basement membrane and a single layer of flattened cells with a free surface?

Accepted Answer

A)  Muscle tissue 
B)  Simple epithelium 
C)  Connective tissue 
D)  Undifferentiated tissue 
E)  Stratified epithelium 
A)  Muscle tissue 
B)  Simple epithelium 
C)  Connective tissue 
D)  Undifferentiated tissue 
E)  Stratified epithelium

Question 13

In humans, the body needs to maintain oxygen levels within narrow homeostatic ranges. If the blood oxygen level drops below that range, the body responds by

Accepted Answer

A)  using positive feedback to raise the oxygen level. 
B)  using negative feedback loops to further lower the oxygen level. 
C)  using negative feedback loops to return the oxygen level to normal. 
D)  using positive feedback to further lower the oxygen level. 
E)  setting this lower oxygen level as the new normal. 
A)  using positive feedback to raise the oxygen level. 
B)  using negative feedback loops to further lower the oxygen level. 
C)  using negative feedback loops to return the oxygen level to normal. 
D)  using positive feedback to further lower the oxygen level. 
E)  setting this lower oxygen level as the new normal.

Question 14

Epithelial tissues are attached to the underlying tissue by a noncellular protein layer called the _ membrane.

Accepted Answer

The answer of Epithelial tissues are attached to the underlying...

Question 15

Together, the stomach, intestines, mouth, and esophagus form a(n)

Accepted Answer

A)  cell. 
B)  ectotherm. 
C)  organ system. 
D)  tissue. 
E)  organ. 
A)  cell. 
B)  ectotherm. 
C)  organ system. 
D)  tissue. 
E)  organ.

Question 16

Tightly packed collagen fibers arranged in either parallel rows or an irregular meshwork are characteristic of
connective tissue.

Accepted Answer

The answer of Tightly packed collagen fibers arranged in either...

Question 17

Why do organisms need to maintain homeostasis?

Accepted Answer

Metabolic reactions work at optimal leve

Question 18

Widely scattered cells embedded in large amounts of extracellular material composed of randomly arranged collagen fibers make up

Accepted Answer

A)  stratified epithelial tissue. 
B)  dense connective tissue. 
C)  adipose tissue. 
D)  loose connective tissue. 
E)  cardiac muscle. 
A)  stratified epithelial tissue. 
B)  dense connective tissue. 
C)  adipose tissue. 
D)  loose connective tissue. 
E)  cardiac muscle.

Question 19

The lining of the trachea is formed from tissue.

Accepted Answer

A)  nerve 
B)  connective 
C)  muscle 
D)  undifferentiated 
E)  epithelial 
A)  nerve 
B)  connective 
C)  muscle 
D)  undifferentiated 
E)  epithelial

Question 20

Cells that generate electrical impulses form tissue.

Accepted Answer

The answer of Cells that generate electrical impulses form tissue....

Exam 32: Homeostasis and the Organization of the Animal Body

Most of the homeostatic functions in the body are regulated by positive feedback loops.

The basement membrane of epithelial tissues produces a waterproof barrier of cells to protect the tissue above it.

Why are negative feedback loops more effective at maintaining homeostasis than positive feedback loops?

The tissue in the photograph is

Which of the following controls the temperature in endothermic animals?

What is the primary reason internal homeostasis must be maintained?

How are cardiac and smooth muscles similar?

The maintenance of internal conditions within narrow ranges is known as homeostasis.

The digestive and respiratory tracts contain muscle.

Which cells are designed to conduct electrical impulses?

Which tissue helps endotherms maintain body temperature in cool weather?

Which tissue is characterized by a basement membrane and a single layer of flattened cells with a free surface?

In humans, the body needs to maintain oxygen levels within narrow homeostatic ranges. If the blood oxygen level drops below that range, the body responds by

Epithelial tissues are attached to the underlying tissue by a noncellular protein layer called the _ membrane.

Together, the stomach, intestines, mouth, and esophagus form a(n)

Tightly packed collagen fibers arranged in either parallel rows or an irregular meshwork are characteristic of connective tissue.

Why do organisms need to maintain homeostasis?

Widely scattered cells embedded in large amounts of extracellular material composed of randomly arranged collagen fibers make up

The lining of the trachea is formed from tissue.

Cells that generate electrical impulses form tissue.

An Introduction to Life on Earth

Atoms, Molecules, and Life

Biological Molecules

Cell Structure and Function

Cell Membrane Structure and Function

Energy Flow in the Life of a Cell

Capturing Solar Energy: Photosynthesis

Harvesting Energy: Glycolysis and Cellular Respiration

Cellular Reproduction

Meiosis: the Basis of Sexual Reproduction

Patterns of Inheritance

Dna: the Molecule of Heredity

Gene Expression and Regulation

Biotechnology

Principles of Evolution

How Populations Evolve

The Origin of Species

The History of Life

Systematics: Seeking Order Amid Diversity

The Diversity of Prokaryotes and Viruses

The Diversity of Protists

The Diversity of Plants

The Diversity of Fungi

Animal Diversity I: Invertebrates

Animal Diversity II: Vertebrates

Animal Behavior

Population Growth and Regulation

Community Interactions

Energy Flow and Nutrient Cycling in Ecosystems

Earths Diverse Ecosystems

Conserving Earths Biodiversity

Circulation

Respiration

Nutrition and Digestion

The Urinary System

Defenses Against Disease

Chemical Control of the Animal Body: the Endocrine System

The Nervous System

The Senses

Action and Support: the Muscles and Skeleton

Animal Reproduction

Animal Development

Plant Anatomy and Nutrient Transport

Plant Reproduction and Development

Plant Responses to the Environment

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