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Practice questions from your own MCAT material

Worked MCAT practice question examples are most useful when they show why each wrong choice fails, not only which answer is correct. Reviewing that reasoning across biology, chemistry, physics, and psychology builds the habit the passage-based sections test.

Multiple-choice, true/false, and short-answer formats, each with an explanation
Built from your own PDFs, slides, DOCX files, or photos of pages
Free plan includes 3 generations per month, studied in the browser
Exports start on Plus (PDF, DOCX, Anki, CSV); Pro adds QTI 2.1 and Moodle XML

Example MCAT practice questions with answers

Which amino acid has a positively charged side chain at physiological pH?Lysine. Its side chain amine has a pKa near 10.5, so it carries a positive charge at physiological pH, unlike aspartate or glutamate.

Which organ produces bile?The liver. Hepatocytes make bile, which is stored in the gallbladder and released into the small intestine to emulsify fats.

Which type of error does random assignment reduce in a controlled study?Selection bias. Random assignment spreads known and unknown confounding factors roughly evenly across the groups being compared.

True or false: raising temperature increases every reaction rate by the same factor.False. The effect of temperature is nonlinear and depends on activation energy, as described by the Arrhenius relationship.

What is the main role of the citric acid cycle?Producing NADH and FADH2 that feed the electron transport chain, along with a small amount of GTP or ATP. Its main role is supplying electron carriers for oxidative phosphorylation.

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Each question comes with an explanation so you learn why the correct choice works and the others do not.

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Spaced review

Turn questions into flashcards with spaced repetition so missed topics come back before exam day.

How it works

Upload your notes

Add lecture slides, chapter PDFs, or typed notes for the MCAT content you are studying.

Pick a question type

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Work through the explanations

Answer each question, read the explanation, and revisit anything you got wrong.

DeckOwl reads the material you upload and writes questions from it, so a set can match the exact chapters or lectures on your schedule. Every question includes an explanation, and you can study in the browser on the free plan with 3 generations per month.

Exports are a paid feature. Plus is $99.90/year or $9.99/month and adds unlimited generations, PDF, DOCX, Anki, and CSV export. Pro is $14.99/month and adds QTI 2.1 and Moodle XML export. Students get 40% off with a school email, and no credit card is needed to start.

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Frequently asked questions

How many MCAT practice questions should I do in one session?

There is no fixed number that works for everyone. Many students work in short timed sets and review every explanation before starting the next one.

Are generated MCAT questions as good as official practice materials?

Official AAMC materials are the closest match to the real exam, so use them as your benchmark. Generated questions are most useful for drilling content from your own review notes and lectures.

Can I export my DeckOwl questions to PDF for printing?

Yes, PDF and DOCX export are included on the Plus plan. The free plan lets you study in the browser but does not include exports.

Does DeckOwl write MCAT questions without my notes?

Questions are generated from the material you upload, so add your review notes or chapter PDFs first. Each question includes an explanation so you can see why the answer is correct.

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