1
BIOD 151 FINAL EXAM VERSION 1 & 2 | 2025 ESSENTIAL
HUMAN ANATOMY & PHYSIOLOGY I | Advanced/Hard/Mixed
Difficulty | Comprehensive Practice Test | 100% Pass
Guaranteed | Graded A+
1 A patient is admitted with a severe injury to the epigastric region. Which of the following
organs is most likely to be directly affected by this injury?
A. The urinary bladder
B. The liver and stomach
C. The small intestine and appendix
D. The lungs and heart
Correct Answer: B
Explanation: The epigastric region is the upper middle portion of the abdomen, located just
below the sternum. The liver and stomach are the primary organs located in this region. The
urinary bladder is in the hypogastric region. The small intestine and appendix are in the lower
quadrants. The lungs and heart are in the thoracic cavity.
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2 During a laboratory experiment, a student observes a cell under a microscope and notes the
presence of a distinct nucleus, numerous membrane-bound organelles, and a cell wall
composed of chitin. This cell is most likely from which type of organism?
A. A plant
B. An animal
C. A fungus
D. A bacterium
Correct Answer: C
Explanation: Fungal cells are eukaryotic (have a distinct nucleus and membrane-bound
organelles) and have a cell wall composed of chitin. Plant cells also have a cell wall, but it is
made of cellulose. Animal cells lack a cell wall. Bacterial cells are prokaryotic and lack a distinct
nucleus and membrane-bound organelles.
3 A patient's blood test reveals a pH of 7.25. Which of the following physiological responses is
the body most likely to initiate to compensate for this imbalance?
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A. Hyperventilation to decrease carbon dioxide levels
B. Hypoventilation to increase carbon dioxide levels
C. Increased renal reabsorption of bicarbonate
D. Increased renal excretion of bicarbonate
Correct Answer: C
Explanation: A pH of 7.25 indicates acidosis. The body's primary compensatory
mechanisms include: (1) respiratory compensation (hyperventilation to blow off CO2), and (2)
renal compensation (increased reabsorption of bicarbonate to buffer the acid). Option A is
correct for respiratory compensation, but Option C is the correct renal response. Since the
question asks for a physiological response to compensate, increased renal reabsorption of
bicarbonate is a key compensatory mechanism for acidosis.
4 A patient is diagnosed with a condition that causes a loss of microvilli on the epithelial cells
lining their small intestine. Which of the following processes would be most directly and
immediately impaired?
A. Absorption of nutrients
B. Secretion of digestive enzymes
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C. Physical breakdown of food
D. Propulsion of food through the intestine
Correct Answer: A
Explanation: Microvilli are finger-like projections on the apical surface of epithelial cells in
the small intestine that dramatically increase the surface area for absorption. Their loss would
directly impair the absorption of nutrients. Secretion of enzymes is a function of goblet cells and
glands. Physical breakdown and propulsion are primarily mechanical functions.
5 A researcher is studying the movement of a small, non-polar molecule across a cell
membrane. This movement is occurring down its concentration gradient and does not require
energy or a membrane protein. Which of the following processes is being observed?
A. Facilitated diffusion
B. Simple diffusion
C. Active transport
D. Osmosis
BIOD 151 FINAL EXAM VERSION 1 & 2 | 2025 ESSENTIAL
HUMAN ANATOMY & PHYSIOLOGY I | Advanced/Hard/Mixed
Difficulty | Comprehensive Practice Test | 100% Pass
Guaranteed | Graded A+
1 A patient is admitted with a severe injury to the epigastric region. Which of the following
organs is most likely to be directly affected by this injury?
A. The urinary bladder
B. The liver and stomach
C. The small intestine and appendix
D. The lungs and heart
Correct Answer: B
Explanation: The epigastric region is the upper middle portion of the abdomen, located just
below the sternum. The liver and stomach are the primary organs located in this region. The
urinary bladder is in the hypogastric region. The small intestine and appendix are in the lower
quadrants. The lungs and heart are in the thoracic cavity.
,2
2 During a laboratory experiment, a student observes a cell under a microscope and notes the
presence of a distinct nucleus, numerous membrane-bound organelles, and a cell wall
composed of chitin. This cell is most likely from which type of organism?
A. A plant
B. An animal
C. A fungus
D. A bacterium
Correct Answer: C
Explanation: Fungal cells are eukaryotic (have a distinct nucleus and membrane-bound
organelles) and have a cell wall composed of chitin. Plant cells also have a cell wall, but it is
made of cellulose. Animal cells lack a cell wall. Bacterial cells are prokaryotic and lack a distinct
nucleus and membrane-bound organelles.
3 A patient's blood test reveals a pH of 7.25. Which of the following physiological responses is
the body most likely to initiate to compensate for this imbalance?
,3
A. Hyperventilation to decrease carbon dioxide levels
B. Hypoventilation to increase carbon dioxide levels
C. Increased renal reabsorption of bicarbonate
D. Increased renal excretion of bicarbonate
Correct Answer: C
Explanation: A pH of 7.25 indicates acidosis. The body's primary compensatory
mechanisms include: (1) respiratory compensation (hyperventilation to blow off CO2), and (2)
renal compensation (increased reabsorption of bicarbonate to buffer the acid). Option A is
correct for respiratory compensation, but Option C is the correct renal response. Since the
question asks for a physiological response to compensate, increased renal reabsorption of
bicarbonate is a key compensatory mechanism for acidosis.
4 A patient is diagnosed with a condition that causes a loss of microvilli on the epithelial cells
lining their small intestine. Which of the following processes would be most directly and
immediately impaired?
A. Absorption of nutrients
B. Secretion of digestive enzymes
, 4
C. Physical breakdown of food
D. Propulsion of food through the intestine
Correct Answer: A
Explanation: Microvilli are finger-like projections on the apical surface of epithelial cells in
the small intestine that dramatically increase the surface area for absorption. Their loss would
directly impair the absorption of nutrients. Secretion of enzymes is a function of goblet cells and
glands. Physical breakdown and propulsion are primarily mechanical functions.
5 A researcher is studying the movement of a small, non-polar molecule across a cell
membrane. This movement is occurring down its concentration gradient and does not require
energy or a membrane protein. Which of the following processes is being observed?
A. Facilitated diffusion
B. Simple diffusion
C. Active transport
D. Osmosis
