Anatomy & Physiology I Complete Study Guide 2026/2027 | Cell Biology, Tissues, Skeletal & Muscular Systems Concept Review | Questions | Pre-Nursing 2026/2027 | Page 1 |
Passing Score: 80%
ANATOMY & PHYSIOLOGY I
Anatomy & Physiology I Complete Study Guide 2026/2027 | Cell
Biology, Tissues, Skeletal & Muscular Systems Concept
Review | Questions | Pre-Nursing
2026/2027 Edition - Official Exam 2026/2027
75 80% N/A
QUESTIONS PASSING SCORE RECERTIFICATION
TABLE OF CONTENTS
Section 1 Cell Biology and Chemistry Q1-15
Section 2 Tissues and Integumentary System Q16-30
Section 3 Skeletal System Q31-45
Section 4 Muscular System Q46-60
Section 5 Nervous System Q61-75
Instructions: Select the single best answer for each question. This exam is designed for Anatomy & Physiology I
certification preparation. Passing score: 80% (60 questions correct).
Anatomy & Physiology I -- 2026/2027 | Passing Score: 80% | Page 1 of 40
, SECTION 1 | Cell Biology and Chemistry | Q1-Q15 | Anatomy & Physiology I 2026/2027
Q1 Question 1 of 75
A 28-year-old graduate student presents with chronic fatigue and muscle weakness. Laboratory
analysis reveals impaired mitochondrial ATP synthesis due to a defect in the electron transport
chain. Which cellular process is most directly affected by this dysfunction?
A. Aerobic cellular respiration and oxidative phosphorylation
B. Ribosomal protein translation in the cytoplasm
C. Facilitated diffusion across the plasma membrane
D. Lysosomal enzymatic degradation of macromolecules
Correct Answer: A
Rationale:
Mitochondria are the primary site of aerobic respiration and oxidative phosphorylation, which generate the
majority of cellular ATP. A defect in the electron transport chain directly impairs this energy-producing
pathway. Ribosomal protein translation occurs in the cytoplasm, not in mitochondria.
Q2 Question 2 of 75
A 45-year-old male undergoing chemotherapy exhibits significant hair loss and gastrointestinal
distress. The oncologist explains that these side effects occur because chemotherapeutic agents
primarily target which type of cells?
A. Cells in G0 phase of cellular quiescence
B. Rapidly dividing cells progressing through mitosis
C. Cells stalled at the G1 phase checkpoint
D. Cells undergoing DNA repair in S phase only
Correct Answer: B
Rationale:
Chemotherapy targets rapidly dividing cells, which are actively progressing through mitosis. Hair follicle
cells and gastrointestinal epithelial cells divide frequently, making them collateral targets. Cells in G0 are
quiescent and not affected by mitotic inhibitors.
Anatomy & Physiology I -- 2026/2027 | Passing Score: 80% | Page 2 of 40
,Q3 Question 3 of 75
A 32-year-old researcher observes that a particular cell type contains abundant rough endoplasmic
reticulum and a prominent Golgi apparatus. Based on these structural features, this cell most likely
specializes in which function?
A. Lipid storage and steroid hormone synthesis
B. Phagocytosis of foreign microorganisms
C. Protein synthesis and secretion for export
D. ATP generation through aerobic metabolism
Correct Answer: C
Rationale:
Rough ER is studded with ribosomes for protein synthesis, and the Golgi apparatus modifies, packages,
and secretes proteins. Cells with abundant rough ER and Golgi are specialized for protein export. Lipid
synthesis occurs in smooth ER, not rough ER.
Q4 Question 4 of 75
A 55-year-old woman with type 2 diabetes has elevated blood glucose levels of 210 mg/dL. Her
physician explains that glucose enters most cells through which transport mechanism?
A. Active transport requiring ATP hydrolysis
B. Simple diffusion through the phospholipid bilayer
C. Osmosis through aquaporin channels
D. Facilitated diffusion through GLUT transport proteins
Correct Answer: D
Rationale:
Glucose is a polar molecule that cannot cross the hydrophobic lipid bilayer by simple diffusion. It enters
cells through facilitated diffusion via GLUT transporter proteins. This process does not require ATP
because glucose moves down its concentration gradient.
Anatomy & Physiology I -- 2026/2027 | Passing Score: 80% | Page 3 of 40
, Q5 Question 5 of 75
A 22-year-old nursing student examines a slide showing a cell with a large central vacuole, a rigid
cell wall, and chloroplasts. The student correctly identifies this as which type of cell?
A. Eukaryotic plant cell
B. Prokaryotic bacterial cell
C. Eukaryotic animal cell
D. Archaeal single-celled organism
Correct Answer: A
Rationale:
A large central vacuole, rigid cell wall, and chloroplasts are defining features of eukaryotic plant cells.
Animal cells lack cell walls and chloroplasts. Prokaryotic cells do not have membrane-bound organelles
like vacuoles or chloroplasts.
Q6 Question 6 of 75
A 40-year-old male presents with a genetic disorder that impairs the sodium-potassium pump in his
cell membranes. This pump maintains the resting membrane potential by transporting ions in which
configuration per cycle?
A. Two sodium ions out and three potassium ions in
B. Three sodium ions out and two potassium ions in
C. Three sodium ions in and two potassium ions out
D. Two sodium ions in and three potassium ions out
Correct Answer: B
Rationale:
The sodium-potassium pump transports three sodium ions out of the cell and two potassium ions into the
cell per ATP hydrolyzed. This unequal exchange creates the electrochemical gradient essential for the
resting membrane potential. Option C reverses the direction of transport.
Anatomy & Physiology I -- 2026/2027 | Passing Score: 80% | Page 4 of 40
Passing Score: 80%
ANATOMY & PHYSIOLOGY I
Anatomy & Physiology I Complete Study Guide 2026/2027 | Cell
Biology, Tissues, Skeletal & Muscular Systems Concept
Review | Questions | Pre-Nursing
2026/2027 Edition - Official Exam 2026/2027
75 80% N/A
QUESTIONS PASSING SCORE RECERTIFICATION
TABLE OF CONTENTS
Section 1 Cell Biology and Chemistry Q1-15
Section 2 Tissues and Integumentary System Q16-30
Section 3 Skeletal System Q31-45
Section 4 Muscular System Q46-60
Section 5 Nervous System Q61-75
Instructions: Select the single best answer for each question. This exam is designed for Anatomy & Physiology I
certification preparation. Passing score: 80% (60 questions correct).
Anatomy & Physiology I -- 2026/2027 | Passing Score: 80% | Page 1 of 40
, SECTION 1 | Cell Biology and Chemistry | Q1-Q15 | Anatomy & Physiology I 2026/2027
Q1 Question 1 of 75
A 28-year-old graduate student presents with chronic fatigue and muscle weakness. Laboratory
analysis reveals impaired mitochondrial ATP synthesis due to a defect in the electron transport
chain. Which cellular process is most directly affected by this dysfunction?
A. Aerobic cellular respiration and oxidative phosphorylation
B. Ribosomal protein translation in the cytoplasm
C. Facilitated diffusion across the plasma membrane
D. Lysosomal enzymatic degradation of macromolecules
Correct Answer: A
Rationale:
Mitochondria are the primary site of aerobic respiration and oxidative phosphorylation, which generate the
majority of cellular ATP. A defect in the electron transport chain directly impairs this energy-producing
pathway. Ribosomal protein translation occurs in the cytoplasm, not in mitochondria.
Q2 Question 2 of 75
A 45-year-old male undergoing chemotherapy exhibits significant hair loss and gastrointestinal
distress. The oncologist explains that these side effects occur because chemotherapeutic agents
primarily target which type of cells?
A. Cells in G0 phase of cellular quiescence
B. Rapidly dividing cells progressing through mitosis
C. Cells stalled at the G1 phase checkpoint
D. Cells undergoing DNA repair in S phase only
Correct Answer: B
Rationale:
Chemotherapy targets rapidly dividing cells, which are actively progressing through mitosis. Hair follicle
cells and gastrointestinal epithelial cells divide frequently, making them collateral targets. Cells in G0 are
quiescent and not affected by mitotic inhibitors.
Anatomy & Physiology I -- 2026/2027 | Passing Score: 80% | Page 2 of 40
,Q3 Question 3 of 75
A 32-year-old researcher observes that a particular cell type contains abundant rough endoplasmic
reticulum and a prominent Golgi apparatus. Based on these structural features, this cell most likely
specializes in which function?
A. Lipid storage and steroid hormone synthesis
B. Phagocytosis of foreign microorganisms
C. Protein synthesis and secretion for export
D. ATP generation through aerobic metabolism
Correct Answer: C
Rationale:
Rough ER is studded with ribosomes for protein synthesis, and the Golgi apparatus modifies, packages,
and secretes proteins. Cells with abundant rough ER and Golgi are specialized for protein export. Lipid
synthesis occurs in smooth ER, not rough ER.
Q4 Question 4 of 75
A 55-year-old woman with type 2 diabetes has elevated blood glucose levels of 210 mg/dL. Her
physician explains that glucose enters most cells through which transport mechanism?
A. Active transport requiring ATP hydrolysis
B. Simple diffusion through the phospholipid bilayer
C. Osmosis through aquaporin channels
D. Facilitated diffusion through GLUT transport proteins
Correct Answer: D
Rationale:
Glucose is a polar molecule that cannot cross the hydrophobic lipid bilayer by simple diffusion. It enters
cells through facilitated diffusion via GLUT transporter proteins. This process does not require ATP
because glucose moves down its concentration gradient.
Anatomy & Physiology I -- 2026/2027 | Passing Score: 80% | Page 3 of 40
, Q5 Question 5 of 75
A 22-year-old nursing student examines a slide showing a cell with a large central vacuole, a rigid
cell wall, and chloroplasts. The student correctly identifies this as which type of cell?
A. Eukaryotic plant cell
B. Prokaryotic bacterial cell
C. Eukaryotic animal cell
D. Archaeal single-celled organism
Correct Answer: A
Rationale:
A large central vacuole, rigid cell wall, and chloroplasts are defining features of eukaryotic plant cells.
Animal cells lack cell walls and chloroplasts. Prokaryotic cells do not have membrane-bound organelles
like vacuoles or chloroplasts.
Q6 Question 6 of 75
A 40-year-old male presents with a genetic disorder that impairs the sodium-potassium pump in his
cell membranes. This pump maintains the resting membrane potential by transporting ions in which
configuration per cycle?
A. Two sodium ions out and three potassium ions in
B. Three sodium ions out and two potassium ions in
C. Three sodium ions in and two potassium ions out
D. Two sodium ions in and three potassium ions out
Correct Answer: B
Rationale:
The sodium-potassium pump transports three sodium ions out of the cell and two potassium ions into the
cell per ATP hydrolyzed. This unequal exchange creates the electrochemical gradient essential for the
resting membrane potential. Option C reverses the direction of transport.
Anatomy & Physiology I -- 2026/2027 | Passing Score: 80% | Page 4 of 40
