BIOL 3306 HUMAN ANATOMY AND PHYSIOLOGY FINAL
EXAM QUESTIONS AND ANSWERS (VERIFIED ANSWERS),
100% GUARANTEED PASS - UNIVERSITY OF HOUSTON
BIOL 3306 HUMAN ANATOMY AND PHYSIOLOGY — COMPREHENSIVE
PRACTICE FINAL
QUESTIONS 1–10: FOUNDATIONS, CELLS, AND TISSUES
1. A patient develops severe dehydration after prolonged vomiting. Which change would
most directly cause water to move from the intracellular fluid into the extracellular fluid?
A. Decreased extracellular osmolarity
B. Increased extracellular osmolarity
C. Decreased intracellular osmolarity
D. Increased intracellular volume
Correct Answer: B
Rationale:
Why B is right: An increase in extracellular osmolarity makes the extracellular compartment
hypertonic relative to the cell. Water moves across the plasma membrane by osmosis toward the
compartment with greater effective solute concentration, causing water to leave cells.
Why the others are wrong:
• A: Decreased extracellular osmolarity would favor water entering cells.
• C: Intracellular osmolarity is not the primary change described.
• D: Increased intracellular volume would be an effect of water entering cells, not leaving
them.
2. A researcher observes a membrane protein that uses ATP to move Na⁺ out of a cell while
moving K⁺ into the cell against their concentration gradients. Which transport mechanism
is involved?
A. Facilitated diffusion
B. Primary active transport
C. Secondary active transport
D. Simple diffusion
Correct Answer: B
,Rationale:
Why B is right: The sodium-potassium pump is a classic example of primary active transport
because it directly hydrolyzes ATP to move ions against their electrochemical gradients.
Why the others are wrong:
• A: Facilitated diffusion does not require ATP and moves substances down their gradient.
• C: Secondary active transport indirectly uses energy stored in an ion gradient rather than
directly hydrolyzing ATP.
• D: Simple diffusion does not require membrane proteins or ATP.
3. A mutation prevents a cell from producing functional ribosomal proteins. Which cellular
process would be most directly impaired?
A. ATP production
B. Protein synthesis
C. Lipid storage
D. DNA replication
Correct Answer: B
Rationale:
Why B is right: Ribosomes translate messenger RNA into polypeptide chains. Defective
ribosomes therefore directly impair protein synthesis.
Why the others are wrong:
• A: ATP production primarily involves mitochondria.
• C: Lipid storage is associated with lipid droplets and other cellular processes.
• D: DNA replication occurs primarily in the nucleus and requires DNA polymerases rather
than ribosomes.
4. Which epithelial tissue is best suited for rapid diffusion of gases across the alveolar wall?
A. Simple squamous epithelium
B. Simple cuboidal epithelium
C. Stratified squamous epithelium
D. Transitional epithelium
Correct Answer: A
,Rationale:
Why A is right: Simple squamous epithelium consists of a single layer of thin cells, minimizing
diffusion distance. Pulmonary alveoli are lined primarily by this tissue.
Why the others are wrong:
• B: Simple cuboidal epithelium is better suited for secretion and absorption.
• C: Stratified squamous epithelium provides protection against abrasion.
• D: Transitional epithelium permits stretching and is characteristic of the urinary tract.
5. A patient sustains a tendon injury. Which type of connective tissue has been damaged?
A. Areolar connective tissue
B. Dense regular connective tissue
C. Hyaline cartilage
D. Adipose tissue
Correct Answer: B
Rationale:
Why B is right: Tendons contain dense regular connective tissue, characterized by parallel
collagen fibers that provide strong tensile resistance in one primary direction.
Why the others are wrong:
• A: Areolar tissue is loose connective tissue used for packing and support.
• C: Hyaline cartilage is found in locations such as articular surfaces and the respiratory
tract.
• D: Adipose tissue primarily stores energy and provides insulation.
6. During mitosis, duplicated chromosomes are separated and pulled toward opposite poles.
Which stage is this?
A. Prophase
B. Metaphase
C. Anaphase
D. Telophase
Correct Answer: C
, Rationale:
Why C is right: During anaphase, sister chromatids separate and move toward opposite poles
of the cell.
Why the others are wrong:
• A: Prophase involves chromosome condensation and spindle formation.
• B: Metaphase aligns chromosomes at the metaphase plate.
• D: Telophase involves re-formation of nuclear envelopes around separated chromosome
sets.
7. A patient has a mutation affecting collagen production. Which consequence would be
most likely?
A. Reduced tensile strength of connective tissues
B. Inability to generate action potentials
C. Excessive production of ATP
D. Increased filtration by renal glomeruli
Correct Answer: A
Rationale:
Why A is right: Collagen is a major structural protein in connective tissue, including tendons,
ligaments, bone, and dermis. Impaired collagen production can weaken these tissues.
Why the others are wrong:
• B: Action potentials primarily depend on ion channels and membrane electrical
properties.
• C: Collagen defects do not cause excessive ATP production.
• D: Glomerular filtration depends on renal blood flow and filtration-barrier properties.
8. Which organelle is primarily responsible for modifying, sorting, and packaging proteins
destined for secretion?
A. Lysosome
B. Golgi apparatus
C. Nucleolus
D. Centrosome
Correct Answer: B
EXAM QUESTIONS AND ANSWERS (VERIFIED ANSWERS),
100% GUARANTEED PASS - UNIVERSITY OF HOUSTON
BIOL 3306 HUMAN ANATOMY AND PHYSIOLOGY — COMPREHENSIVE
PRACTICE FINAL
QUESTIONS 1–10: FOUNDATIONS, CELLS, AND TISSUES
1. A patient develops severe dehydration after prolonged vomiting. Which change would
most directly cause water to move from the intracellular fluid into the extracellular fluid?
A. Decreased extracellular osmolarity
B. Increased extracellular osmolarity
C. Decreased intracellular osmolarity
D. Increased intracellular volume
Correct Answer: B
Rationale:
Why B is right: An increase in extracellular osmolarity makes the extracellular compartment
hypertonic relative to the cell. Water moves across the plasma membrane by osmosis toward the
compartment with greater effective solute concentration, causing water to leave cells.
Why the others are wrong:
• A: Decreased extracellular osmolarity would favor water entering cells.
• C: Intracellular osmolarity is not the primary change described.
• D: Increased intracellular volume would be an effect of water entering cells, not leaving
them.
2. A researcher observes a membrane protein that uses ATP to move Na⁺ out of a cell while
moving K⁺ into the cell against their concentration gradients. Which transport mechanism
is involved?
A. Facilitated diffusion
B. Primary active transport
C. Secondary active transport
D. Simple diffusion
Correct Answer: B
,Rationale:
Why B is right: The sodium-potassium pump is a classic example of primary active transport
because it directly hydrolyzes ATP to move ions against their electrochemical gradients.
Why the others are wrong:
• A: Facilitated diffusion does not require ATP and moves substances down their gradient.
• C: Secondary active transport indirectly uses energy stored in an ion gradient rather than
directly hydrolyzing ATP.
• D: Simple diffusion does not require membrane proteins or ATP.
3. A mutation prevents a cell from producing functional ribosomal proteins. Which cellular
process would be most directly impaired?
A. ATP production
B. Protein synthesis
C. Lipid storage
D. DNA replication
Correct Answer: B
Rationale:
Why B is right: Ribosomes translate messenger RNA into polypeptide chains. Defective
ribosomes therefore directly impair protein synthesis.
Why the others are wrong:
• A: ATP production primarily involves mitochondria.
• C: Lipid storage is associated with lipid droplets and other cellular processes.
• D: DNA replication occurs primarily in the nucleus and requires DNA polymerases rather
than ribosomes.
4. Which epithelial tissue is best suited for rapid diffusion of gases across the alveolar wall?
A. Simple squamous epithelium
B. Simple cuboidal epithelium
C. Stratified squamous epithelium
D. Transitional epithelium
Correct Answer: A
,Rationale:
Why A is right: Simple squamous epithelium consists of a single layer of thin cells, minimizing
diffusion distance. Pulmonary alveoli are lined primarily by this tissue.
Why the others are wrong:
• B: Simple cuboidal epithelium is better suited for secretion and absorption.
• C: Stratified squamous epithelium provides protection against abrasion.
• D: Transitional epithelium permits stretching and is characteristic of the urinary tract.
5. A patient sustains a tendon injury. Which type of connective tissue has been damaged?
A. Areolar connective tissue
B. Dense regular connective tissue
C. Hyaline cartilage
D. Adipose tissue
Correct Answer: B
Rationale:
Why B is right: Tendons contain dense regular connective tissue, characterized by parallel
collagen fibers that provide strong tensile resistance in one primary direction.
Why the others are wrong:
• A: Areolar tissue is loose connective tissue used for packing and support.
• C: Hyaline cartilage is found in locations such as articular surfaces and the respiratory
tract.
• D: Adipose tissue primarily stores energy and provides insulation.
6. During mitosis, duplicated chromosomes are separated and pulled toward opposite poles.
Which stage is this?
A. Prophase
B. Metaphase
C. Anaphase
D. Telophase
Correct Answer: C
, Rationale:
Why C is right: During anaphase, sister chromatids separate and move toward opposite poles
of the cell.
Why the others are wrong:
• A: Prophase involves chromosome condensation and spindle formation.
• B: Metaphase aligns chromosomes at the metaphase plate.
• D: Telophase involves re-formation of nuclear envelopes around separated chromosome
sets.
7. A patient has a mutation affecting collagen production. Which consequence would be
most likely?
A. Reduced tensile strength of connective tissues
B. Inability to generate action potentials
C. Excessive production of ATP
D. Increased filtration by renal glomeruli
Correct Answer: A
Rationale:
Why A is right: Collagen is a major structural protein in connective tissue, including tendons,
ligaments, bone, and dermis. Impaired collagen production can weaken these tissues.
Why the others are wrong:
• B: Action potentials primarily depend on ion channels and membrane electrical
properties.
• C: Collagen defects do not cause excessive ATP production.
• D: Glomerular filtration depends on renal blood flow and filtration-barrier properties.
8. Which organelle is primarily responsible for modifying, sorting, and packaging proteins
destined for secretion?
A. Lysosome
B. Golgi apparatus
C. Nucleolus
D. Centrosome
Correct Answer: B
