dat destroyer

In this video, Dr. Jim Romano explains the reticuloendothelial system and how it is tested on the DAT and OAT. The focus is on macrophages, phagocytosis, and immune system function—areas that commonly confuse students in DAT Biology. This explanation is useful for students using the DAT...

Hi everyone — wanted to share a quick video walkthrough on an important QR topic that many students struggle with: Comparison Word Problems This video breaks down how to approach DAT-style comparison problems step-by-step so you can avoid timing traps and avoid common mistakes. YouTube 📹...

#DAT Question of the Day.... Identify the structures indicated by the arrows. a) Secretory granules b) Ribosomes c) Lipid droplets d) Lysosomes e) Glycogen granules Correct answer: B — Ribosomes Ribosomes are essential cellular machines responsible for protein synthesis. They translate...

=AZZfLUs4A5iKS2TcRZcI0pt9zf5h14VTpiRGmZU8uyze12tZKB62tVVrdRaMacW-G3oMeV4iS_QFX4aOfuzxmjIlYTkVCFlEW_KdnbRvOeBuHbq9d2koeqIVdDGpRu-zz_H62YbHzlnwBcMN02tYR5iV&__tn__=*NK*F']#DAT Question of the DAY.... The below molecule I present shows significant promise in cancer studies for inhibiting cancer...

Blood flow and blood vessels are high-yield DAT Biology topics that show up repeatedly on the exam. In this short video, Dr. Jim Romano explains how blood moves through arteries, veins, and capillaries, and how vessel structure relates directly to function — exactly how this material is tested...

General chemistry pH calculations are a high-yield topic on the DAT and OAT, and many students lose points by overthinking the setup. In this short video, Dr. Jim Romano walks through a clear, exam-focused approach to pH calculations so you can recognize the correct method quickly and avoid...

Genetics and Punnett squares are high-yield topics on the DAT and OAT Biology sections. In this video, Dr. Jim Romano walks through inheritance patterns and Punnett square reasoning the way the exam expects you to understand them — focusing on conceptual clarity, not memorization shortcuts...

DAT Question of the Day Alcohol consumption affects multiple neurotransmitter systems. After several drinks, which of the following will be decreased? a) GABA b) Serotonin c) Glutamate d) Dopamine e) Endorphins f) None — all increase Correct Answer: C) Glutamate Alcohol increases...

Nuclear chemistry questions appear on the DAT and OAT General Chemistry sections, and many students lose points by misunderstanding radioactive decay, nuclear equations, and setup. In this short video, Dr. Jim Romano walks through nuclear chemistry step by step, showing how to approach these...

These hormone associations are high-yield DAT Biology and absolutely fair game on the exam. If you know these concepts cold and pair them with the 2026 DAT Destroyer, you put yourself in a strong position to break into the 500+ range under the new DAT scoring system. 📘 Dr. Romano’s Biology...

The number of carbon atoms in the parent chain when naming this compound by IUPAC is ____________. a) 4 b) 5 c) 6 d) 7 e) None of these Correct Answer: B (5) This one is tricky AF. The longest carbon chain MUST contain the parent functional group. In this problem, the parent...

Which of the following proteins is devoid of a quaternary structure? A) Myoglobin B) Keratin C) Hemoglobin D) Immunoglobin E) Collagen F) Two of these G) None of these (See answer below.) Correct Answer: A) Myoglobin Explanation: Myoglobin does not have a quaternary structure because it...

Mr. Rostov invested a sum of money into an index fund that pays 9% interest per year. After 30 years, his gain was $1,326,767.85. Prior to the investment, Mr. Rostov was saving $50 per day from his salary. How long did he have to save to invest the needed amount to obtain those gains? A) 2.5...

One of our students was accepted to Stony Brook University School of Dental Medicine. After receiving confirmation from admissions, he shared the following message: Congratulations on a well-earned acceptance. — DAT Destroyer | OAT Destroyer Written by Dr. Jim Romano

DAT-Style Math Question A car costs $42,000 and depreciates in value 8% annually. How long would it take for the car to reach 55% of its original price? A) 8 years and 2 days B) 6 years and 20 days C) 7 years and 73 days D) 3 years and 37 days E) 7 years and 37 days Correct Answer: C Use...

Paul has been studying for his exams. For every 3 hours he spends studying Biology, he spends 2 hours studying Chemistry. He did not go to class and spent the entire day in the library. He only got 4 hours of sleep. The next day, he planned to spend the same total amount of time studying...

This short video breaks down a DAT Gas Law challenge problem that looks easy on the surface but catches many students off guard on test day. Dr. Jim Romano walks through the setup, strategy, and common mistakes students make with gas law questions under time pressure. Watch here: Gas law...

Here’s a quick review video from Prof. Blois covering how to approach and solve common discount word problems on the DAT. If you’re preparing for the DAT or OAT, math word problems show up often — and learning a clean, structured approach can save valuable time on test day. Prof. Blois...

Let us consider the molecule shown above. After OH⁻ attacks in step 1, how many additional mechanism arrows are required to justify the formation of the product? a) 2 b) 3 c) 4 d) 5 e) 6 f) 7 g) 8 Answer: B Dr. Romano noted that this transformation is another classic “arrow problem,”...

Organic Chemistry Mechanism Arrows Explained (Video) | DAT Destroyer | OAT Destroyer Over the years I’ve seen a lot of students struggle with mechanism arrows in Organic Chemistry. It’s one of those areas where once you understand why electrons move, everything else starts to make sense —...

Here is a geometry practice problem involving an inscribed circle and rectangle. This type of setup is common on the DAT, and recognizing that the width becomes the diameter of the circle is the key step. Full solution included below. Problem: A circle is inscribed within a rectangle so that...

The Math Destroyer Giveaway has officially ended. Congratulations to our winner, u/Silent-Huckleberry28. We have contacted the winner, and their photo will be posted as soon as it is received. Thank you to everyone who participated and supported the Destroyer Team. For students preparing for...

We are running a free 2025 Math Destroyer Giveaway for a limited time. ⚡ 48-Hour Flash Giveaway — 2025 Math Destroyer We are running a free 2025 Math Destroyer Giveaway for a limited time. This giveaway is hosted on our official Reddit community so students can enter and see transparent, public...

We are pleased to announce the winner of our recent DAT Destroyer Giveaway. Congratulations to our Instagram winner, @seohyunmiin. Thank you to everyone who participated and continues to support our mission of helping students succeed on the DAT. We will be offering more student giveaways...

. The sum of Ted’s 4 test scores is 340. How much higher must he score on the final exam, compared to the average of the first four exams, if the final exam is worth one third of the final grade for his average to become 87? A) 10 B) 7 C) 9 D) 6 E) 4 Answer: D If the sum of the four test...

Question: How many distinct C-13 NMR signals does C₆₀ (buckminsterfullerene) produce? Answer: Even though C₆₀ contains 60 carbon atoms, it produces only 1 C-13 NMR signal. This is because the molecule is extraordinarily symmetrical — every carbon atom occupies an identical environment. In NMR...

SN1 vs SN2 is one of the most tested reaction mechanisms on both the DAT and OAT, and many students still struggle to decide which pathway a substitution reaction will follow. Dr. Romano breaks down the key concepts step-by-step in this short teaching video. What this video covers: • The...

Black Friday Giveaway Winner Announcement | DAT Destroyer | OAT Destroyer Congratulations to our Black Friday Giveaway Winner, @seohyunmiin. You have won a brand-new DAT Destroyer book from Dr. Jim Romano and Orgoman. Please contact us within 7 days so we can confirm your shipping...

Sheldon has 60 fewer apps on his phone than Patricia.Patricia has 5× as many apps as Sheldon.If their total number of apps were divided evenly among three friends, how many apps would each friend receive? A) 12 B) 15 C) 30 D) 20 E) 10 Answer: C Let S = Sheldon and P = Patricia S = P – 60...

Here is a high-yield DAT Math (QR) probability question — a topic many students struggle with on test day. This walkthrough is taught by Prof. Blois and is representative of the style and reasoning you will face on the actual exam. 📌 Watch the video: Probability questions are extremely...

DAT and OAT Math Practice Question (From Our Math Instructor) Max and Dave received a combined test score of 140. Max’s score was Z times higher than Dave’s. How much did Dave score in terms of Z? A) 140/(Z+1) B) 140/(Z−1) C) Z/(140+1) D) 1/(140+Z) E) Z/(1−140) Solution Let: M = Max’s...

DAT Question of the Day Which of the following does not describe a globular protein? a. generally function in structure and support roles b. hemoglobin is an example c. often function as enzymes or transport proteins d. peptide chains folded into spherical shapes e. water soluble Correct...

Percent yield shows up frequently on the DAT and OAT, and Dr. Romano breaks it down in a clear, high-yield way you can use on test day. If you’re prepping for the DAT or OAT, this is a must-know General Chemistry topic. 🎥 Watch the video: JOIN THE DAT DESTROYER COMMUNITY 👉 Facebook Study...

A lot of students reach out after taking the DAT once or twice and still feeling stuck, especially in general chemistry and organic chemistry. If that’s you, you’re not alone. Most of the time it isn’t about working harder, it’s about reinforcing the foundations the right way. Every time Dr...

🎥 Biology video from Dr. Jim Romano: In this lesson, Dr. Romano explains the difference between decomposers and detritivores — two essential ecological groups that recycle nutrients and maintain balance in ecosystems. This is a high-yield topic that often appears on the DAT and OAT Biology...

Dr. Romano goes over the rules for naming compounds, an essential General Chemistry topic on the DAT. This video is a great refresher if you want to strengthen your fundamentals before exam day. Watch here: If you have questions after watching, feel free to post them here — happy to help...

Here’s a high-yield DAT biology question for anyone prepping this cycle: The bacteria involved in the production of dental caries is…? A. Streptococcus mutans B. Enterococcus C. Yersinia pestis D. Streptococcus pyogenes E. Bordetella pertussis Answer: A is correct! Explanation: The...

📘 DAT Daily Practice — pH Question Here's a great no-calculator-style problem students should be ready for: A) 7.0 × 10⁻⁵ M B) 2.0 × 10⁻⁶ M ✅ C) 1.0 × 10⁻⁵ M D) 1.0 × 10⁻⁶ M E) 3.0 × 10⁻⁵ M Correct answer: B Don’t forget on the real DAT, these no-calculator mental math questions come fast...

If you're feeling stuck with self-study or overwhelmed by the amount of material, our live Zoom-based DAT & OAT classes might be the structure you need this fall. The course is taught by Dr. Jim Romano, creator of the DAT & OAT Destroyer books, and Professor Barengolts, a former NYU Chemistry...