TEAS 2026 Science Cheat Sheet: Biology Concepts You Need to Know

Studying for the TEAS Science section can feel overwhelming, but breaking down complex biology concepts into manageable chunks makes a huge difference. From my own experience, focusing on understanding the process behind diffusion and osmosis rather than rote memorization helped me visualize how substances move across cell membranes. Knowing the difference between passive and active transport, especially how energy use differs, really clarified a lot. When I tackled cell organelles, I created flashcards to match each organelle with its function, which made recalling details like lysosomes for digestion and ribosomes for protein synthesis easier. Mitosis and meiosis can be confusing, but remembering that mitosis produces identical daughter cells for growth and repair while meiosis generates genetically diverse gametes made it clearer for me. DNA base pairing and genetics are certainly high-yield topics. Practicing Punnett squares regularly increased my confidence in predicting genotype and phenotype ratios. It’s helpful to connect genotype (genetic makeup) with phenotype (observable traits) in practical examples. On enzymes and cellular respiration, I found that understanding how enzymes lower activation energy and how aerobic respiration produces more ATP than anaerobic respiration helped me grasp cellular energy production better. I used diagrams to visualize these processes, which made reviewing easier. Stem cell potency ranks as a more advanced topic, but knowing the difference between totipotent, pluripotent, and multipotent stem cells gave me a solid foundation in developmental biology. For molecular techniques like PCR and gel electrophoresis, watching videos demonstrating how DNA fragments separate and amplify provided useful real-life context. Finally, pacing your study and circling back to challenging topics multiple times enhances retention. Using a checklist of systems like cardiovascular and respiratory as you improve can boost your confidence. Remember, the key is consistent, focused study with plenty of active recall and practice. You got this, future nurse!