Question 1

Positive-feedback control systems:

Accepted Answer

A) have no effect on the deviation from set point. 
B) accelerate a change. 
C) ignore a change. 
D) do not exist in human systems. 
A) have no effect on the deviation from set point. 
B) accelerate a change. 
C) ignore a change. 
D) do not exist in human systems.

Question 2

The normal reading or range of normal is called the:

Accepted Answer

A) sensor point. 
B) set point. 
C) effector point. 
D) integrator point. 
A) sensor point. 
B) set point. 
C) effector point. 
D) integrator point.

Question 3

Negative-feedback mechanisms:

Accepted Answer

A) minimize changes in blood glucose levels. 
B) maintain homeostasis. 
C) are responsible for an increased rate of sweating when air temperature is higher than body temperature. 
D) All of the above are correct. 
A) minimize changes in blood glucose levels. 
B) maintain homeostasis. 
C) are responsible for an increased rate of sweating when air temperature is higher than body temperature. 
D) All of the above are correct.

Question 4

Intracellular parasites that consist of DNA or RNA surrounded by a protein coat and sometimes by a lipoprotein envelope are called:

Accepted Answer

A) viruses. 
B) bacteria. 
C) fungi. 
D) protozoa. 
A) viruses. 
B) bacteria. 
C) fungi. 
D) protozoa.

Question 5

Match each term with its corresponding definition or explanation
-A one-celled organism whose DNA is organized into a nucleus that can parasitize human tissue

Accepted Answer

A) Prion 
B) Tumor 
C) Fungi 
D) Gene mutation 
E) Bacteria
F)Virus
G)Protozoa 
A) Prion 
B) Tumor 
C) Fungi 
D) Gene mutation 
E) Bacteria
F)Virus
G)Protozoa

Question 6

If the secretion of oxytocin during childbirth operated as a negative-feedback control loop, what effect would it have on uterine contractions?

Accepted Answer

A) Oxytocin would stimulate stronger uterine contractions. 
B) Oxytocin would inhibit uterine contractions. 
C) There would be no changes in the strength of the uterine contractions. 
D) Uterine contractions would initially be weak and then gain strength after the release of the hormone. 
A) Oxytocin would stimulate stronger uterine contractions. 
B) Oxytocin would inhibit uterine contractions. 
C) There would be no changes in the strength of the uterine contractions. 
D) Uterine contractions would initially be weak and then gain strength after the release of the hormone.

Question 7

Diagram a homeostatic control mechanism, including the three basic components.

Accepted Answer

Homeostatic control mechanisms are essen

Question 8

Of the 11 major body systems, which is the least involved in maintaining homeostasis?

Accepted Answer

A) Circulatory 
B) Endocrine 
C) Lymphatic 
D) Reproductive 
A) Circulatory 
B) Endocrine 
C) Lymphatic 
D) Reproductive

Question 9

Match each term with its corresponding definition or explanation
-An abnormal growth or neoplasm

Accepted Answer

A) Prion 
B) Tumor 
C) Fungi 
D) Gene mutation 
E) Bacteria
F)Virus
G)Protozoa 
A) Prion 
B) Tumor 
C) Fungi 
D) Gene mutation 
E) Bacteria
F)Virus
G)Protozoa

Question 10

Explain the feed-forward control system, and give an example of one in the body.

Accepted Answer

The answer of Explain the feed-forward control system, and give...

Question 11

Homeostasis can best be described as:

Accepted Answer

A) a constant state maintained by living and nonliving organisms. 
B) a state of relative constancy. 
C) adaptation to the external environment. 
D) changes in body temperature. 
A) a constant state maintained by living and nonliving organisms. 
B) a state of relative constancy. 
C) adaptation to the external environment. 
D) changes in body temperature.

Question 12

Which of the following is a protein substance with no DNA or RNA and is thought to be the cause of mad cow disease?

Accepted Answer

A) Virus 
B) Bacteria 
C) Prion 
D) Protozoan 
A) Virus 
B) Bacteria 
C) Prion 
D) Protozoan

Exam 2: Homeostasis

Positive-feedback control systems:

The normal reading or range of normal is called the:

Negative-feedback mechanisms:

Intracellular parasites that consist of DNA or RNA surrounded by a protein coat and sometimes by a lipoprotein envelope are called:

Match each term with its corresponding definition or explanation -A one-celled organism whose DNA is organized into a nucleus that can parasitize human tissue

If the secretion of oxytocin during childbirth operated as a negative-feedback control loop, what effect would it have on uterine contractions?

Diagram a homeostatic control mechanism, including the three basic components.

Of the 11 major body systems, which is the least involved in maintaining homeostasis?

Match each term with its corresponding definition or explanation -An abnormal growth or neoplasm

Explain the feed-forward control system, and give an example of one in the body.

Homeostasis can best be described as:

Which of the following is a protein substance with no DNA or RNA and is thought to be the cause of mad cow disease?

Organization of the Body

Chemistry of Life

Biomolecules

Cell Structure

Cell Function

Cell Growth and Development

Introduction to Tissues

Tissue Types

Skin

Skeletal Tissues

Axial Skeleton

Appendicular Skeleton

Articulations

Axial Muscles

Appendicular Muscles

Muscle Contraction

Nervous System Cells

Nerve Signaling

Central Nervous System

Peripheral Nervous System

Autonomic Nervous System

General Senses

Special Senses

Endocrine Regulation

Endocrine Glands

Blood

Heart

Blood Vessels

Circulation of the Blood

Lymphatic System

Innate Immunity

Adaptive Immunity

Stress

Respiratory Tract

Ventilation

Gas Exchange Transport

Upper Digestive Tract

Lower Digestive Tract

Digestion and Absorption

Nutrition and Metabolism

Urinary System

Fluid and Electrolyte Balance

Acid-Base Balance

Male Reproductive System

Female Reproductive System

Growth, Development, and Aging

Genetics and Heredity

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