dr jim romano

Can you determine the correct percentage before checking the solution? Math Practice Problem: Percent Profit Can you solve this DAT and OAT Quantitative Reasoning problem? Mr. Sharp buys two used cars and resells them for a profit. Can you determine how much more he spent on the second...

Can you calculate the correct percentage before reviewing the solution? Math Practice Problem: Percent Profit Can you solve this DAT and OAT Quantitative Reasoning problem? Mr. Sharp purchases two used cars and resells them for a profit. Can you determine what percent more he spent on the...

Can you identify the correct answer before reviewing the explanation? Free DAT & OAT Study Resources FREE DAT Preparation Resources from Dr. Jim Romano: Start Your DAT and OAT Preparation for Free | Official Resources from Dr. Jim Romano DAT Destroyer and OAT Destroyer Books...

Free DAT & OAT Study Resources FREE DAT Preparation Resources from Dr. Jim Romano: Start Your DAT and OAT Preparation for Free | Official Resources from Dr. Jim Romano DAT Destroyer and OAT Destroyer Books: https://www.orgoman.com DAT Destroyer Study Group: Facebook

General Chemistry: Electrolysis Practice Problem How many amperes are required to deposit 5.00 grams of gold from a solution containing Au³⁺ ions in one hour? In this video, Dr. Jim Romano demonstrates how to solve an electrolysis problem using Faraday's law. This is an excellent review of...

General Chemistry: Electrolysis Practice Problem How many amperes are required to deposit 5.00 grams of gold from a solution containing Au³⁺ ions in one hour? In this video, Dr. Jim Romano demonstrates how to solve an electrolysis problem using Faraday's law. This is an excellent review of...

Energy and Photons | OAT General Chemistry Understanding the relationship between energy, frequency, and wavelength is essential for OAT General Chemistry. In this video, Dr. Jim Romano explains energy and photons, helping students understand these important chemistry concepts and strengthen...

Energy and Photons | DAT and OAT General Chemistry Understanding the relationship between energy, frequency, and wavelength is essential for DAT and OAT General Chemistry. In this video, Dr. Jim Romano explains energy and photons, helping students understand these important chemistry concepts...

Test your General Chemistry skills with today's DAT and OAT practice problem. This problem reviews stoichiometry, mole relationships, and percent efficiency, important concepts for DAT and OAT General Chemistry. Work through the problem carefully, then check Dr. Romano's handwritten solution...

Test your General Chemistry skills with today's DAT and OAT practice problem. This problem reviews stoichiometry, mole relationships, and percent efficiency, important concepts for DAT and OAT General Chemistry. Work through the problem carefully, then check Dr. Romano's handwritten solution...

Test your General Chemistry skills with today’s DAT and OAT practice question from Dr. Jim Romano. This problem reviews electron configurations, ion formation, and electron removal, important General Chemistry concepts for DAT and OAT preparation. Try the problem first, then check the second...

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Endocrine cells are not limited to the major endocrine glands. The stomach also contains enteroendocrine cells that secrete hormones involved in regulating digestion and other physiological processes. Give the problem a try before checking Dr. Romano’s explanation. Understanding the endocrine...

Endocrine cells are not limited to the major endocrine glands. The stomach also contains enteroendocrine cells that secrete hormones involved in regulating digestion and other physiological processes. Give the problem a try before checking Dr. Romano’s explanation. Understanding the endocrine...

Which biome is dominated by gymnosperms such as pines and spruce? Take a look at today’s DAT/OAT Biology problem and give it a try before checking Dr. Jim Romano’s explanation. More free DAT & OAT study resources from Dr. Jim Romano: Free DAT & OAT Resources Join the DAT and OAT Destroyer...

Which biome is dominated by gymnosperms such as pines and spruce? Take a look at today’s DAT/OAT Biology problem and give it a try before checking Dr. Jim Romano’s explanation. More free DAT & OAT study resources from Dr. Jim Romano: Free DAT & OAT Resources Join the DAT and OAT Destroyer...

Annual growth rings (tree rings) are a classic Biology topic that tests your understanding of plant anatomy. The vascular cambium produces new secondary xylem inward each growing season. The varying rate of secondary xylem production during the seasons creates the annual growth rings seen in...

Congratulations to another outstanding OAT student! We're grateful that this student allowed us to share their experience anonymously to help encourage future optometry students. OAT Scores Academic Average: 370 (95th percentile) Total Science: 360 (88th percentile) Biology: 400 (99th...

Can you solve this DAT General Chemistry challenge? Take a moment to work through the problem before swiping to Slide 2 for the answer and explanation. Electrochemistry is a high-yield topic for the DAT and OAT. This challenge reviews the role of the salt bridge in a voltaic (galvanic)...

Kinetics and Activation Energy are two important General Chemistry topics tested on the DAT and OAT. In this video, Dr. Jim Romano explains reaction rates, activation energy, collision theory, and the factors that affect chemical reactions. Free DAT Resources: Start Your DAT and OAT...

Can you identify the correct answer before viewing the solution? Understanding resonance structures and electron delocalization is essential for success in General Chemistry and frequently tested on both the DAT and OAT. If you're preparing for the DAT or OAT, the DAT Destroyer and Math...

Quantum numbers are a fundamental General Chemistry topic that frequently appears on both the DAT and OAT. In this video, Dr. Jim Romano explains: • Principal Quantum Number (n) • Angular Momentum Quantum Number (l) • Magnetic Quantum Number (ml) • Spin Quantum Number (ms) Understanding...

Acid-base reactions are among the most important topics in DAT Organic Chemistry. Understanding how to identify acids and bases, compare pKa values, and predict reaction outcomes can make many DAT questions much easier to solve. In this short lesson, Dr. Jim Romano reviews a simple approach to...

One of the most important topics in DAT Organic Chemistry is understanding the differences between SN1, SN2, E1, and E2 reactions. In this video, Dr. Jim Romano explains the reaction mechanisms and shows students how to recognize when substitution and elimination reactions occur. Video: DAT...

Did you get the correct answer before looking at Slide 2? Many DAT quantitative reasoning mistakes occur because students rush through the wording instead of carefully analyzing the fractions. Post your answer and reasoning below. DAT Destroyer: DAT Destroyer 2026 — Complete DAT Science Prep...

One of the most rewarding parts of what we do is seeing students reach their goals and move one step closer to dental school. Dina recently earned: 450 Academic Average 470 Total Science 530 Organic Chemistry 430 Biology 450 General Chemistry 460 PAT 400 Reading Comprehension...

A DAT organic chemistry and biochemistry crossover question involving dopamine synthesis and enzyme recognition. Many students memorize reaction names without understanding what is actually happening mechanistically. Here we are removing a carboxylic acid group and releasing carbon dioxide —...

A DAT-style quantitative reasoning problem testing fractions, setup logic, and careful interpretation of wording. Many students lose points on DAT math not because the arithmetic is difficult, but because they rush through the setup and misread the relationships between the fractions. Can...

Can you solve it before looking at the answer? Students often ask which DAT study materials are actually used in real courses. The DAT Destroyer and Math Destroyer are the core books used in Dr. Jim Romano’s DAT preparation classes. DAT Destroyer: DAT Destroyer 2026 — Complete DAT Science Prep...

Sertoli cells are one of the highest-yield reproductive physiology topics tested on the DAT. Do you know which hormone these cells produce? Students often ask which DAT study materials are actually used in real courses. The DAT Destroyer and Math Destroyer are the core books used in Dr. Jim...

Students preparing for the DAT often memorize Biology facts without understanding function. Questions like this test conceptual understanding, not just recall. Answer and explanation on slide 2. DAT Destroyer: DAT Destroyer 2026 — Complete DAT Science Prep System | Dr. Jim Romano Math...

Wanted to share my DAT scores with everyone. AA: 450 TS: 460 Biology: 500 Thank you DAT Destroyer Team for everything. I could not have done it without you or the DAT Destroyer. — Max Students often ask which DAT study materials are actually used in real courses. The DAT Destroyer and...

The law of segregation explains how alleles separate during gamete formation. Introduced by Gregor Mendel in the 1800s, this principle states that the two alleles for a trait segregate during meiosis, ensuring each gamete carries only one allele for each gene. DAT Destroyer: DAT Destroyer 2026...

Understanding physiological buffer systems is essential for both DAT Biology and General Chemistry. The bicarbonate buffer system is the primary extracellular buffer and accounts for most of the buffering capacity in plasma. DAT Destroyer: DAT Destroyer 2026 — Complete DAT Science Prep System...

Miracles do come true. One of our students was just accepted to Touro College of Dental Medicine — Class of 2030. She attended Dr. Romano's DAT preparation classes and stayed consistent throughout her preparation. "Dreams do come true." — Milana Congratulations Milana! DAT Destroyer works...

If you’re preparing for the DAT or OAT, the DAT Destroyer and Math Destroyer are the core books used in Dr. Jim Romano’s DAT preparation courses, both online and in person. DAT Destroyer DAT Destroyer 2026 — Complete DAT Science Prep System | Dr. Jim Romano Math Destroyer 2026 Math Destroyer...

Cyanobacteria are believed to be among the oldest organisms on Earth and played a key role in oxygenating the atmosphere through photosynthesis. Fossil evidence suggests they appeared at least 3.5 billion years ago, making them a foundational concept for understanding early life and...

This problem combines aldol chemistry with degrees of unsaturation. Under basic conditions with heat, the reaction proceeds through aldol formation followed by dehydration. From there, careful counting of rings and pi bonds determines the final degree of unsaturation. Students often ask...

This is a classic restriction question that students often overlook. Watch the setup carefully — Gly cannot be placed at either end, which changes the total number of valid arrangements. Students often ask which DAT study materials are actually used in real courses. The DAT Destroyer and...