BIO 181 – 100+ Exam Questions & Answers | DNA, RNA, Immunity, Digestion, Photosynthesis – 2025/2026 | Arizona State University

This document contains 100+ expertly verified questions and answers for BIO 181: General Biology I at Arizona State University (ASU), based on the 2025/2026 curriculum. It is a complete study guide ideal for exam preparation, covering core molecular and cellular biology topics with clearly structured, high-quality Q&A content. Students will find comprehensive coverage of the DNA replication process, RNA transcription and translation, post-translational modifications, and the genetic code. Additional focus areas include photosynthesis and the Calvin-Benson cycle, ATP production, enzyme action, and cellular respiration (glycolysis, citric acid cycle, and oxidative phosphorylation). The document also explores the immune system (B cells, T cells, MHC complexes, inflammation), digestive physiology (bile secretion, enzyme functions, nutrient absorption), and homeostatic mechanisms like insulin response and vitamin synthesis. This resource is especially useful for: Undergraduate biology students preparing for midterms or finals Students in pre-med, biomedical sciences, nursing, and biochemistry Courses in Molecular Biology, Introductory Physiology, and Genetics Anyone needing a complete set of foundational biology Q&As for review or tutoring The format includes multiple choice, true/false, fill-in-the-blank, and short-answer explanations—organized to reflect ASU’s instruction style. It serves both as a learning tool and an assessment aid to strengthen understanding and retention. Keywords: BIO 181, DNA replication, RNA transcription, protein synthesis, Okazaki fragments, MHC, immune response, digestion, glycolysis, ATP, citric acid cycle, photosynthesis, Rubisco, nucleotides, ASU biology exam