,BIOL251/BIOL 251 Human Anatomy & Physiology I w/Lab
Module 2 Exam | Portage Learning | 2026 Edition (PDF)
1. Which of the following correctly lists the levels of organization from simplest to most complex?
A) Tissue, cell, organ, organ system, organism
B) Chemical, tissue, cellular, organ, organism
C) Chemical, cell, tissue, organ, organ system, organism
D) Cell, tissue, chemical, organ system, organism
Correct Answer: Chemical, cell, tissue, organ, organ system, organism
Rationale: The hierarchy of biological organization begins at the chemical level (atoms and molecules),
progresses to the cellular level, then to tissues, organs, organ systems, and finally the organism. This
order reflects increasing complexity from simple molecules to the entire living body.
2. A group of similar cells that work together to perform a specific function is called a(n):
A) Organelle
B) Organ
C) Tissue
D) Organ system
Correct Answer: Tissue
Rationale: Tissues are defined as collections of similar cells and their extracellular matrix that work
together to perform a common function. Organs are composed of multiple tissue types, while organelles
are subcellular structures.
3. Which of the following is NOT one of the four primary types of tissues in the human body?
A) Epithelial tissue
B) Connective tissue
C) Vascular tissue
,D) Nervous tissue
Correct Answer: Vascular tissue
Rationale: The four primary tissue types are epithelial, connective, muscle, and nervous tissue. Vascular
tissue is not a primary tissue type; blood is a type of connective tissue, and vascular refers to blood
vessels.
4. Which tissue type is specialized for covering body surfaces and lining internal cavities?
A) Connective tissue
B) Muscle tissue
C) Nervous tissue
D) Epithelial tissue
Correct Answer: Epithelial tissue
Rationale: Epithelial tissue covers body surfaces, lines internal cavities and hollow organs, and forms
glands. Its functions include protection, absorption, secretion, and sensation.
5. Which characteristic is shared by all epithelial tissues?
A) Extensive extracellular matrix
B) Rich blood supply
C) Apical–basal polarity
D) Ability to contract
Correct Answer: Apical–basal polarity
Rationale: All epithelial tissues have distinct apical (free) and basal (attached) surfaces. They are
avascular (lack blood vessels) and have minimal extracellular matrix compared to connective tissue.
, 6. Which type of epithelium is best suited for rapid diffusion?
A) Stratified squamous
B) Simple squamous
C) Simple cuboidal
D) Pseudostratified columnar
Correct Answer: Simple squamous
Rationale: Simple squamous epithelium consists of a single layer of thin, flat cells, making it ideal for
rapid diffusion and filtration. It is found in the alveoli of the lungs and the lining of blood vessels.
7. The alveoli of the lungs are lined primarily by:
A) Simple cuboidal epithelium
B) Simple columnar epithelium
C) Simple squamous epithelium
D) Stratified squamous epithelium
Correct Answer: Simple squamous epithelium
Rationale: The alveoli are lined by simple squamous epithelium, which is thin enough to facilitate rapid
gas exchange between the air and blood.
8. Which epithelial tissue provides protection against abrasion?
A) Simple squamous
B) Stratified squamous
C) Simple cuboidal
D) Transitional
Correct Answer: Stratified squamous
Module 2 Exam | Portage Learning | 2026 Edition (PDF)
1. Which of the following correctly lists the levels of organization from simplest to most complex?
A) Tissue, cell, organ, organ system, organism
B) Chemical, tissue, cellular, organ, organism
C) Chemical, cell, tissue, organ, organ system, organism
D) Cell, tissue, chemical, organ system, organism
Correct Answer: Chemical, cell, tissue, organ, organ system, organism
Rationale: The hierarchy of biological organization begins at the chemical level (atoms and molecules),
progresses to the cellular level, then to tissues, organs, organ systems, and finally the organism. This
order reflects increasing complexity from simple molecules to the entire living body.
2. A group of similar cells that work together to perform a specific function is called a(n):
A) Organelle
B) Organ
C) Tissue
D) Organ system
Correct Answer: Tissue
Rationale: Tissues are defined as collections of similar cells and their extracellular matrix that work
together to perform a common function. Organs are composed of multiple tissue types, while organelles
are subcellular structures.
3. Which of the following is NOT one of the four primary types of tissues in the human body?
A) Epithelial tissue
B) Connective tissue
C) Vascular tissue
,D) Nervous tissue
Correct Answer: Vascular tissue
Rationale: The four primary tissue types are epithelial, connective, muscle, and nervous tissue. Vascular
tissue is not a primary tissue type; blood is a type of connective tissue, and vascular refers to blood
vessels.
4. Which tissue type is specialized for covering body surfaces and lining internal cavities?
A) Connective tissue
B) Muscle tissue
C) Nervous tissue
D) Epithelial tissue
Correct Answer: Epithelial tissue
Rationale: Epithelial tissue covers body surfaces, lines internal cavities and hollow organs, and forms
glands. Its functions include protection, absorption, secretion, and sensation.
5. Which characteristic is shared by all epithelial tissues?
A) Extensive extracellular matrix
B) Rich blood supply
C) Apical–basal polarity
D) Ability to contract
Correct Answer: Apical–basal polarity
Rationale: All epithelial tissues have distinct apical (free) and basal (attached) surfaces. They are
avascular (lack blood vessels) and have minimal extracellular matrix compared to connective tissue.
, 6. Which type of epithelium is best suited for rapid diffusion?
A) Stratified squamous
B) Simple squamous
C) Simple cuboidal
D) Pseudostratified columnar
Correct Answer: Simple squamous
Rationale: Simple squamous epithelium consists of a single layer of thin, flat cells, making it ideal for
rapid diffusion and filtration. It is found in the alveoli of the lungs and the lining of blood vessels.
7. The alveoli of the lungs are lined primarily by:
A) Simple cuboidal epithelium
B) Simple columnar epithelium
C) Simple squamous epithelium
D) Stratified squamous epithelium
Correct Answer: Simple squamous epithelium
Rationale: The alveoli are lined by simple squamous epithelium, which is thin enough to facilitate rapid
gas exchange between the air and blood.
8. Which epithelial tissue provides protection against abrasion?
A) Simple squamous
B) Stratified squamous
C) Simple cuboidal
D) Transitional
Correct Answer: Stratified squamous
