BIO 108 Lab Midterm 2026 90 Questions – Experimental Design Osmosis Microscopy Enzymes Answers, Biology

This document contains approximately 90 lab-focused midterm exam questions with detailed answers for BIO 108, covering essential topics such as experimental design, microscopy, osmosis, enzyme activity, and cell biology. The content is presented in a structured question-and-answer format with more detailed explanations compared to standard review sheets, making it highly effective for deeper understanding and exam preparation. The material provides comprehensive coverage of core laboratory concepts, including hypothesis formation, predictions, variables, and experimental controls (pages 1–2). It also explores microscopy fundamentals such as magnification, image orientation, and lens function, alongside key biological processes like diffusion, osmosis, and cellular responses to different tonicity conditions (pages 3–4). In addition, the document delves into biochemical lab topics such as enzyme activity (amylase function, temperature effects), chromatography, spectrophotometry, and pigment analysis, emphasizing how these processes are tested and interpreted in laboratory settings (pages 5–6). Further sections focus on cell division and the cell cycle, including mitosis stages, chromosome behavior, and cellular structures, as well as foundational biological principles such as cell theory and molecular movement (pages 6–8). The inclusion of detailed answers enhances conceptual clarity and helps students understand not only what is correct but why it is correct, making it especially valuable for mastering lab-based exam questions. This document is ideal for undergraduate students enrolled in introductory biology laboratory courses such as BIO 108, General Biology Lab, Cell Biology Lab, and Life Sciences lab programs. It is particularly beneficial for first-year university students preparing for midterm exams, practical assessments, and quizzes. It may also support advanced high school students taking AP Biology with a laboratory component. The content aligns closely with widely used textbooks such as Campbell Biology by Lisa A. Urry et al., particularly sections on scientific methods, cell structure, enzymes, and metabolism. It serves as an excellent companion to lab manuals, lecture notes, and practical exercises. Keywords: biology lab midterm, experimental design, hypothesis prediction, variables biology, microscopy, magnification, osmosis, tonicity, enzyme activity, amylase, chromatography, spectrophotometry, cell cycle, mitosis, diffusion, lab techniques, cell biology