COMSAE PHASE 1 ASA 115 – THE COMPLETE 176
QUESTION TEST BANK ALL QUESTIONS WITH
CORRECT VERIFIED ANSWERS & DETAILED
RATIONALES – GRADED A+ FOR THE NEWEST
2026 ACTUAL EXAM QUESTIONS AND CORRECT
ANSWERS (VERIFIED ANSWERS) PLUS
RATIONALES 2026 Q&A | INSTANT DOWNLOAD
PDF.
Core Domains
Osteopathic Principles and Practice (OMM)
Cardiology
Pulmonology
Neurology
Endocrinology
Microbiology and Immunology
Pharmacology
Biostatistics and Epidemiology
Pathology and Pathophysiology
Behavioral Science and Ethics
Introduction
This comprehensive assessment evaluates the osteopathic medical
knowledge and clinical reasoning skills required for COMLEX-USA
Level 1 readiness. The examination systematically assesses
foundational biomedical sciences, osteopathic manipulative
medicine, and clinical presentation across multiple organ systems.
Comprising multiple-choice and scenario-based items, the test
,mirrors the integrated cognitive demands of the NBOME COMSAE
Phase 1 examination. Special emphasis is placed on viscerosomatic
reflexes, somatic dysfunction diagnosis, and real-world application of
clinical decision-making, ensuring candidates demonstrate the
foundational readiness for osteopathic medical licensure.
Section One: Questions 1–176
1. A researcher inserts a gene encoding a human protein into a
bacterial plasmid. Which enzyme is required to seal the DNA
fragments together?
A. DNA polymerase I
B. Helicase
C. Topoisomerase II
D. DNA ligase
D. DNA ligase
RATIONALE: DNA ligase forms phosphodiester bonds between
adjacent DNA fragments, making it essential for recombinant DNA
technology. DNA polymerase synthesizes DNA, helicase unwinds
DNA, and topoisomerase relieves supercoiling.
2. A patient develops nephrotic syndrome with selective
albuminuria. Which glomerular structure is most likely
damaged?
A. Fenestrated endothelium
B. Mesangial cells
C. Podocyte foot processes
D. Juxtaglomerular apparatus
, C. Podocyte foot processes
RATIONALE: Podocyte foot processes and their slit diaphragms
are critical barriers preventing albumin loss. Damage causes
selective proteinuria, a hallmark of many nephrotic syndromes.
3. Which electrolyte abnormality is most likely to produce
peaked T waves on ECG?
A. Hypocalcemia
B. Hyperkalemia
C. Hypokalemia
D. Hypernatremia
B. Hyperkalemia
RATIONALE: Hyperkalemia causes characteristic ECG changes
including peaked T waves, prolonged PR interval, widened QRS
complexes, and eventual sine-wave patterns if severe.
4. A patient has elevated serum calcium and low serum
phosphate. Which hormone is likely increased?
A. Calcitonin
B. Aldosterone
C. Parathyroid hormone
D. Cortisol
C. Parathyroid hormone
RATIONALE: Parathyroid hormone increases serum calcium by
stimulating bone resorption, enhancing renal calcium reabsorption,
, and activating vitamin D. It simultaneously promotes phosphate
excretion.
5. Which cranial nerve carries parasympathetic fibers responsible
for pupillary constriction?
A. CN II
B. CN III
C. CN V
D. CN VI
B. CN III
RATIONALE: The oculomotor nerve carries parasympathetic
fibers to the sphincter pupillae muscle through the ciliary ganglion,
producing pupillary constriction.
6. A deficiency of glucose-6-phosphate dehydrogenase primarily
impairs production of:
A. ATP
B. Glycogen
C. NADPH
D. Lactate
C. NADPH
RATIONALE: G6PD catalyzes the rate-limiting step of the
pentose phosphate pathway, generating NADPH, which protects red
blood cells from oxidative damage.
7. Which immune cell is most responsible for immediate allergic
reactions?
QUESTION TEST BANK ALL QUESTIONS WITH
CORRECT VERIFIED ANSWERS & DETAILED
RATIONALES – GRADED A+ FOR THE NEWEST
2026 ACTUAL EXAM QUESTIONS AND CORRECT
ANSWERS (VERIFIED ANSWERS) PLUS
RATIONALES 2026 Q&A | INSTANT DOWNLOAD
PDF.
Core Domains
Osteopathic Principles and Practice (OMM)
Cardiology
Pulmonology
Neurology
Endocrinology
Microbiology and Immunology
Pharmacology
Biostatistics and Epidemiology
Pathology and Pathophysiology
Behavioral Science and Ethics
Introduction
This comprehensive assessment evaluates the osteopathic medical
knowledge and clinical reasoning skills required for COMLEX-USA
Level 1 readiness. The examination systematically assesses
foundational biomedical sciences, osteopathic manipulative
medicine, and clinical presentation across multiple organ systems.
Comprising multiple-choice and scenario-based items, the test
,mirrors the integrated cognitive demands of the NBOME COMSAE
Phase 1 examination. Special emphasis is placed on viscerosomatic
reflexes, somatic dysfunction diagnosis, and real-world application of
clinical decision-making, ensuring candidates demonstrate the
foundational readiness for osteopathic medical licensure.
Section One: Questions 1–176
1. A researcher inserts a gene encoding a human protein into a
bacterial plasmid. Which enzyme is required to seal the DNA
fragments together?
A. DNA polymerase I
B. Helicase
C. Topoisomerase II
D. DNA ligase
D. DNA ligase
RATIONALE: DNA ligase forms phosphodiester bonds between
adjacent DNA fragments, making it essential for recombinant DNA
technology. DNA polymerase synthesizes DNA, helicase unwinds
DNA, and topoisomerase relieves supercoiling.
2. A patient develops nephrotic syndrome with selective
albuminuria. Which glomerular structure is most likely
damaged?
A. Fenestrated endothelium
B. Mesangial cells
C. Podocyte foot processes
D. Juxtaglomerular apparatus
, C. Podocyte foot processes
RATIONALE: Podocyte foot processes and their slit diaphragms
are critical barriers preventing albumin loss. Damage causes
selective proteinuria, a hallmark of many nephrotic syndromes.
3. Which electrolyte abnormality is most likely to produce
peaked T waves on ECG?
A. Hypocalcemia
B. Hyperkalemia
C. Hypokalemia
D. Hypernatremia
B. Hyperkalemia
RATIONALE: Hyperkalemia causes characteristic ECG changes
including peaked T waves, prolonged PR interval, widened QRS
complexes, and eventual sine-wave patterns if severe.
4. A patient has elevated serum calcium and low serum
phosphate. Which hormone is likely increased?
A. Calcitonin
B. Aldosterone
C. Parathyroid hormone
D. Cortisol
C. Parathyroid hormone
RATIONALE: Parathyroid hormone increases serum calcium by
stimulating bone resorption, enhancing renal calcium reabsorption,
, and activating vitamin D. It simultaneously promotes phosphate
excretion.
5. Which cranial nerve carries parasympathetic fibers responsible
for pupillary constriction?
A. CN II
B. CN III
C. CN V
D. CN VI
B. CN III
RATIONALE: The oculomotor nerve carries parasympathetic
fibers to the sphincter pupillae muscle through the ciliary ganglion,
producing pupillary constriction.
6. A deficiency of glucose-6-phosphate dehydrogenase primarily
impairs production of:
A. ATP
B. Glycogen
C. NADPH
D. Lactate
C. NADPH
RATIONALE: G6PD catalyzes the rate-limiting step of the
pentose phosphate pathway, generating NADPH, which protects red
blood cells from oxidative damage.
7. Which immune cell is most responsible for immediate allergic
reactions?
