🧠 Top 10 Biology Questions on the DAT (and How to Tackle Them) If you're studying for the DAT, you already know Biology can feel like a whirlwind of facts — from cellular respiration to ecology. But some topics always come up. Below are 10 high-yield biology questions you’re likely to see on test day — and how to master them. 🔟 Which organelle is the site of ATP synthesis during oxidative phosphorylation? Answer: MitochondriaTip: Know the function of every organelle cold. Mitochondria = the powerhouse for a reason. 9️⃣ During aerobic respiration, what happens to pyruvate after glycolysis? Answer: It is transported into the mitochondria and converted into Acetyl-CoA.Trap: Some students confuse this with fermentation or skip the conversion step. 8️⃣ What’s the function of the Golgi apparatus? Answer: Modifies, packages, and ships proteins.Memory Trick: Golgi = the Amazon warehouse of the cell. 7️⃣ Which process increases genetic variation during meiosis? Answer: Crossing over in prophase IWatch for: Students often pick anaphase — but that’s when chromosomes are pulled apart. 6️⃣ What is the product of nondisjunction? Answer: Gametes with an abnormal number of chromosomesDAT Tip: Be able to recognize this in a diagram — Down syndrome = trisomy 21. 5️⃣ What’s the difference between innate and adaptive immunity? Answer: Innate = non-specific, fast. Adaptive = specific, slower, memory-based.Bonus: Know B-cells (antibodies) vs. T-cells (cytotoxic help). 4️⃣ Which hormone is secreted by the posterior pituitary? Answer: ADH and oxytocinNote: The posterior pituitary stores hormones made by the hypothalamus. 3️⃣ What happens during the S phase of the cell cycle? Answer: DNA replicationDAT Tip: Expect a question on checkpoints or timing — S phase = DNA synthesis. 2️⃣ Which taxonomic level is more specific than class but more general than family? Answer: OrderMnemonic: Dear King Philip Came Over For Good Soup 1️⃣ Which evolutionary mechanism results from chance events?