Question 1

Which tissue helps endotherms maintain body temperature in cool weather?

Accepted Answer

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

Question 2

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.

Question 3

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 4

Cells that generate electrical impulses form tissue.

Accepted Answer

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

Question 5

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

Question 6

The tissue in the photograph is

Accepted Answer

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

Question 7

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

Question 8

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

Accepted Answer

Negative loops counteract a stimulus to ...

Question 9

The digestive and respiratory tracts contain muscle.

Accepted Answer

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

Question 10

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.

Question 11

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.

Question 12

Why do organisms need to maintain homeostasis?

Accepted Answer

Metabolic reactions work at optimal leve...

Question 13

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

Accepted Answer

A) True 
 B)False

Question 14

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

Accepted Answer

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

Question 15

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

Accepted Answer

A) True 
 B)False

Question 16

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 17

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.

Question 18

The lining of the trachea is formed from tissue.

Accepted Answer

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

Question 19

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

Question 20

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

Accepted Answer

A) True 
 B)False

Exam 32: Homeostasis and the Organization of the Animal Body

Which tissue helps endotherms maintain body temperature in cool weather?

Correct AnswerverifiedShow Answer

Cells that generate electrical impulses form tissue.

Correct AnswerverifiedShow Answer

Which of the following controls the temperature in endothermic animals?

Correct AnswerverifiedShow Answer

What is the primary reason internal homeostasis must be maintained?

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

Why do organisms need to maintain homeostasis?

Correct AnswerverifiedMetabolic reactions work at optimal leve...View AnswerShow Answer

How are cardiac and smooth muscles similar?

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

The lining of the trachea is formed from tissue.

Correct AnswerverifiedShow Answer

The digestive and respiratory tracts contain muscle.

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedNegative loops counteract a stimulus to ...View AnswerShow Answer

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

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

The tissue in the photograph is

Correct AnswerverifiedShow Answer

Which cells are designed to conduct electrical impulses?

Correct AnswerverifiedShow Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
Metabolic reactions work at optimal leve...
View Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
Negative loops counteract a stimulus to ...
View Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified