PAX Study Guide 2026
Everything you need to pass the PAX exam in one place: the exam format, every topic to study, real practice questions with explanations, flashcards, and full-length practice tests. Free, no sign-up needed.
📋 PAX Exam Format at a Glance
📚 PAX Topics to Study (21)
✍️ Sample PAX Questions & Answers
1. During which phase is the chromosome number reduced from diploid to haploid?
Explanation: During meiosis I, the chromosome number is reduced from diploid to haploid. Interphase is the period of the cell cycle that occurs in between divisions of the cell. In meiosis, the homologous chromosomes in a diploid cell separate, reducing the number of chromosomes in each cell by half. Mitosis is the phase of cell division in which the cell nucleus divides. The S phase is the part of the mitotic cycle in which DNA is synthesized.
2. According to the passage, approximately what percentage of people with peanut allergies have severe reactions?
Explanation: The second paragraph of the passage notes that ""up to one-third of people with peanut allergies have severe reactions."" Since one-third is approximately 33%, choice C is correct.
3. A Pre-Admission Examination survey collected responses from 600 participants. If 72% responded positively, how many responded positively?
72% of 600 = 0.72 × 600 = 432 positive responses.
4. In Pre-Admission Examination, what is homeostasis?
Homeostasis is the process by which biological systems maintain internal stability and balance (temperature, pH, glucose levels, etc.) while adjusting to changing external conditions.
5. Which hormone primarily lowers blood glucose by promoting its uptake into cells?
Insulin, produced by beta cells of the pancreas, lowers blood glucose by facilitating cellular uptake and promoting glucose storage as glycogen.
6. What does "context clues" mean in Pre-Admission Examination reading comprehension?
Context clues are hints provided by surrounding words, phrases, and sentences that help readers infer the meaning of unfamiliar vocabulary without external reference materials.