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117+ Free PA-CAT Practice Questions

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Key Facts: PA-CAT Exam

The PA-CAT is a 240-item (200 scored + 40 pretest) multiple-choice physician-assistant school admission test from Exam Master covering nine prerequisite science subjects, with a 200-800 scaled Composite, three sub-scores, and percentile ranks sent directly by Exam Master to the programs a candidate designates.

Sample PA-CAT Practice Questions

Try these sample questions to test your PA-CAT exam readiness. Each question includes a detailed explanation. Start the interactive quiz above for the full 117+ question experience with AI tutoring.

1A child presents with increasing back pain, an uneven gait, and a lateral curvature of the thoracic spine. Which spinal deformity best explains these findings?
A.Kyphosis
B.Lordosis
C.Scoliosis
D.Spina bifida
Explanation: Scoliosis is an abnormal lateral (sideways) curvature of the vertebral column, most often in the thoracic region, which produces an uneven gait and asymmetric posture. The lateral bend, rather than a front-to-back curve, is the defining feature.
2A posterior-wall gastric ulcer perforates and erodes into the organ lying directly behind the stomach, releasing amylase and lipase. Into which structure did the ulcer most likely erode?
A.Left gastric artery
B.Pancreas
C.Peritoneal cavity
D.Pleural cavity
Explanation: The pancreas lies directly posterior to the stomach in the retroperitoneum. A posterior-wall ulcer can erode into it, releasing pancreatic enzymes such as amylase and lipase, and causing focal back pain rather than generalized peritonitis.
3How many pairs of spinal nerves arise from the human spinal cord?
A.12 pairs
B.24 pairs
C.31 pairs
D.33 pairs
Explanation: There are 31 pairs of spinal nerves: 8 cervical, 12 thoracic, 5 lumbar, 5 sacral, and 1 coccygeal. Each pair exits through an intervertebral foramen and carries both sensory and motor fibers.
4Which cranial nerve provides motor innervation to most muscles of the tongue?
A.Trigeminal nerve (CN V)
B.Facial nerve (CN VII)
C.Glossopharyngeal nerve (CN IX)
D.Hypoglossal nerve (CN XII)
Explanation: The hypoglossal nerve (CN XII) supplies motor innervation to all intrinsic and most extrinsic tongue muscles (except palatoglossus). Damage causes the protruded tongue to deviate toward the injured side.
5Which heart valve lies between the left atrium and the left ventricle?
A.Aortic valve
B.Mitral (bicuspid) valve
C.Pulmonary valve
D.Tricuspid valve
Explanation: The mitral (bicuspid) valve sits between the left atrium and left ventricle, preventing backflow during ventricular systole. It has two cusps, distinguishing it from the three-cusped tricuspid valve on the right side.
6The rotator cuff stabilizes the shoulder. Which of the following is NOT one of its four muscles?
A.Supraspinatus
B.Infraspinatus
C.Teres major
D.Subscapularis
Explanation: The four rotator cuff muscles are the supraspinatus, infraspinatus, teres minor, and subscapularis (the SITS muscles). Teres major is not part of the cuff; it is a larger muscle that adducts and medially rotates the arm.
7Which bones form the pectoral (shoulder) girdle?
A.Clavicle and scapula
B.Humerus and scapula
C.Sternum and ribs
D.Ilium and ischium
Explanation: The pectoral girdle consists of the clavicle and scapula, which connect the upper limb to the axial skeleton. The clavicle articulates with the sternum, providing the only bony link between the upper limb and the trunk.
8Which structure connects the stomach to the first portion of the small intestine?
A.Pyloric sphincter
B.Ileocecal valve
C.Cardiac sphincter
D.Sphincter of Oddi
Explanation: The pyloric sphincter is a ring of smooth muscle at the gastric outlet that controls passage of chyme from the stomach into the duodenum, the first part of the small intestine. It regulates the rate of gastric emptying.
9Through which vessel does oxygen-poor blood leave the right ventricle to reach the lungs?
A.Aorta
B.Pulmonary artery
C.Pulmonary vein
D.Superior vena cava
Explanation: The pulmonary artery (pulmonary trunk) carries deoxygenated blood from the right ventricle to the lungs for gas exchange. It is the only artery in the body that normally carries oxygen-poor blood.
10The diaphragm is the primary muscle of inspiration. Which nerve innervates it?
A.Vagus nerve
B.Phrenic nerve
C.Intercostal nerves
D.Recurrent laryngeal nerve
Explanation: The phrenic nerve, arising from cervical roots C3, C4, and C5, provides the sole motor supply to the diaphragm. The mnemonic 'C3, 4, 5 keep the diaphragm alive' reflects this innervation.

About the PA-CAT Exam

The PA-CAT (Physician Assistant College Admission Test) is a standardized, computer-based admission test from Exam Master Corporation used by a growing number of physician assistant programs to assess applicants' mastery of the prerequisite sciences. It contains 240 single-best-answer multiple-choice items — 200 scored plus 40 unscored pretest items — delivered within a four-hour assessment window (about four and a half hours including the tutorial). It covers nine prerequisite science subjects: Anatomy (16%), Physiology (16%), Chemistry (16%), General Biology (11%), Microbiology (11%), Genetics (11%), Biochemistry (5%), Behavioral Sciences (9%), and Statistics (5%). A scaled Composite on a 200-800 range, three sub-scores (Anatomy and Physiology, Biology, Chemistry), percentile ranks, and decile buckets are reported, allowing programs to see strengths and gaps across the prerequisite sciences. Exam Master sends official scores directly to the PA programs a candidate selects in the Candidate Score Portal, together with the candidate's full two-year score history; scores do not travel through CASPA. The test is delivered by Pearson VUE at its test centers or through Pearson online proctoring. Because it spans the full breadth of PA prerequisites, candidates are advised to review the subjects they completed least recently.

Questions

240 scored questions

Time Limit

A four-hour standardized assessment of 240 items; the full appointment window is approximately four and a half hours including a 15-minute on-screen tutorial, computer-based at a Pearson VUE test center or via Pearson online proctoring.

Passing Score

No fixed cutoff; a scaled Composite on a 200-800 range (the same range as the PANCE), three sub-scores for Anatomy and Physiology, Biology, and Chemistry, percentile ranks, and decile buckets are reported. Exam Master sends official scores directly to the programs a candidate selects in the Candidate Score Portal, and each program sets its own expectations.

Exam Fee

$257, paid to Exam Master at registration; the fee covers the exam plus the test-center or remote-proctoring service, so the cost is identical either way. Needs-based fee assistance is available. (Pearson VUE (test delivery); Exam Master Corporation (program owner))

PA-CAT Exam Content Outline

16%

Anatomy

Gross and systemic human anatomy across the back, abdomen, head, pelvis and perineum, thorax, and upper and lower limbs.

16%

Physiology

Function of body systems: the cell, blood and clotting, circulation, endocrine, GI, membrane, renal, respiratory, reproduction, heart, and special senses.

16%

Chemistry (General and Organic)

Acids and bases, atomic theory, bonding/VSEPR, reactions, electrochemistry, gases, stoichiometry, thermochemistry, and organic chemistry.

11%

General Biology

Bioenergetics, biotechnology, cell structure, reproduction, respiration, transport, chemical building blocks, biological molecules, gene expression, and signal transduction.

11%

Microbiology

Bacteria, viruses, fungi, parasites, and microbe-host interaction including pathogenicity and immunity.

11%

Genetics

Molecular structure and replication, inheritance patterns, molecular properties of genes, genetic technologies, and medical and population genetics.

5%

Biochemistry

Intermediary metabolism, proteins, cell and membrane, enzymes, nucleic acids, hormones, and lipids and carbohydrates.

9%

Behavioral Sciences

Biological bases, development, sensation/perception, learning, cognition, social psychology, stress, research methods, sociology, disorders, and therapy.

5%

Statistics

Probability and distributions, exploring data, sampling and experimentation, and statistical inference.

How to Pass the PA-CAT Exam

What You Need to Know

  • Passing score: No fixed cutoff; a scaled Composite on a 200-800 range (the same range as the PANCE), three sub-scores for Anatomy and Physiology, Biology, and Chemistry, percentile ranks, and decile buckets are reported. Exam Master sends official scores directly to the programs a candidate selects in the Candidate Score Portal, and each program sets its own expectations.
  • Exam length: 240 questions
  • Time limit: A four-hour standardized assessment of 240 items; the full appointment window is approximately four and a half hours including a 15-minute on-screen tutorial, computer-based at a Pearson VUE test center or via Pearson online proctoring.
  • Exam fee: $257, paid to Exam Master at registration; the fee covers the exam plus the test-center or remote-proctoring service, so the cost is identical either way. Needs-based fee assistance is available.

Keys to Passing

  • Work through all 117 available questions
  • Review every answer and explanation
  • Track weak areas and revisit them
  • Use our AI tutor for tough concepts

PA-CAT Study Tips from Top Performers

1Review all nine prerequisite science subjects, prioritizing those you completed least recently since the test rewards broad retention.
2Master anatomy and physiology first, as together they make up the largest share of the questions.
3Drill general and organic chemistry fundamentals: stoichiometry, acids and bases, equilibrium, and functional groups.
4Refresh statistics concepts such as probability, distributions, p-values, and interpreting data, which many applicants find rusty.
5Use subject-level practice to find weak areas, since the PA-CAT reports scores by subject as well as overall.
6Practice timed multiple-choice sets to build the stamina needed for a 240-item, four-hour exam.

Frequently Asked Questions

What is the PA-CAT and who takes it?

The PA-CAT (Physician Assistant College Admission Test) is a standardized admission test from Exam Master taken by applicants to physician assistant programs to demonstrate mastery of the prerequisite sciences.

How many questions are on the PA-CAT and how long is it?

The PA-CAT has 240 single-best-answer multiple-choice items — 200 scored plus 40 unscored pretest (field-test) items — and is a four-hour standardized assessment, with the full appointment running about four and a half hours including a 15-minute tutorial. It is taken at a Pearson VUE test center or through Pearson online proctoring.

What subjects does the PA-CAT cover?

It covers nine prerequisite science subjects with fixed weights: Anatomy 16%, Physiology 16%, Chemistry (General and Organic) 16%, General Biology 11%, Microbiology 11%, Genetics 11%, Behavioral Sciences 9%, Biochemistry 5%, and Statistics 5%.

How are PA-CAT scores used?

A scaled Composite on a 200-800 range, sub-scores for Anatomy and Physiology, Biology, and Chemistry, and percentile ranks with decile buckets are reported. Exam Master sends official scores directly to the PA programs a candidate selects in the Candidate Score Portal, at no extra fee; CASPA carries the application but not the scores. Each program decides how to weigh the results in admissions.

Is there a passing score on the PA-CAT?

There is no fixed passing score. Programs that require or recommend the PA-CAT set their own expectations, and the subject-level breakdown helps them see an applicant's strengths and gaps.

How much does the PA-CAT cost?

The PA-CAT fee is $257, paid to Exam Master at registration; it covers both the exam and the test-center or remote-proctoring service, so the cost is the same either way. A needs-based Fee Assistance Program is available to qualified applicants.

When and how are PA-CAT scores reported?

Exam Master processes scores on the 20th of each month and posts the Student Transcript to the Candidate Score Portal by the 1st of the following month, with an email alert when it is available. Official scores are then sent directly to the PA programs the candidate selects, each receiving the candidate's full PA-CAT score history for the past two years. Scores are never reported by phone, email body, or fax.

Can I retake the PA-CAT, and how are prior attempts reported?

The PA-CAT may be retaken once every six weeks, with a maximum of three attempts in any 12-month period; candidates who exceed that limit have all scores invalidated. PA-CAT scores are valid for two years, and every program a candidate selects receives the full two-year score history alongside the current result.