ONS/ONCC Chemotherapy & Immunotherapy 2025/2026 – 120+ Updated Q&A | Cell Cycle, Cyclins, Stem Cells, Immune Response, Myeloid vs Lymphoid | Oncology Nursing Certification

This updated and exam-focused document contains 120+ structured questions and correct answers specifically designed for the 2025/2026 ONS/ONCC Chemotherapy and Immunotherapy Certificate Exam. Ideal for oncology nurses and students, the resource emphasizes cell biology, stem cell differentiation, the immune system, and pharmacologic treatment mechanisms, aligning with current ONS certification guidelines. Covered content includes: Cell cycle checkpoints and division: G1, S, G2, M phases, mitosis, interphase Cyclins and cyclin-dependent kinases: regulation of cell growth and replication Pluripotent stem cells: undifferentiated states, myeloid vs lymphoid lineage Hematopoiesis: production of red blood cells, platelets, and lymphocytes Immune system basics: T cells, B cells, innate vs adaptive immunity Immunotherapy principles: leveraging the body’s immune system to combat cancer Targeted cancer therapies: phase-specific agents and treatment targeting during division High-yield definitions and mechanisms for rapid memorization and clinical relevance Each question is paired with a clear and direct answer formatted for easy review and ideal for certification test prep or quick concept reinforcement. Best suited for: Oncology nurses preparing for ONS/ONCC exams BSN, RN, and APRN students in oncology pathways Medical-surgical nurses cross-training in oncology Students in advanced pharmacology or hematology modules Educators and nurse trainers needing ready-to-use test content Keywords: ONS certification, ONCC, chemotherapy, immunotherapy, oncology nurse, cell cycle, cyclins, stem cells, myeloid lineage, lymphoid lineage, T cells, B cells, cancer biology, nursing pharmacology, hematopoiesis, ONS exam prep