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Get hard MCAT practice questions built from your own study material

DeckOwl does not include a ready-made question bank. Upload your MCAT notes and get multiple-choice, true/false and short-answer questions with explanations for every answer.

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Why generated questions beat a generic MCAT bank

Hard MCAT practice questions are most useful when they test the exact content in your own course notes and review books, because that is where your gaps are. DeckOwl does not include a ready-made question bank, so instead it writes hard MCAT practice questions from the material you upload, with an explanation attached to each answer.

Multiple-choice, true/false and short-answer formats
Explanations that show why each wrong choice fails
Spaced repetition on the questions you miss
PDF, DOCX, QTI 2.1 and Moodle XML export on paid plans

Example hard MCAT practice questions

A competitive inhibitor is added to an enzyme reaction. What happens to Vmax and apparent Km?Vmax is unchanged and apparent Km increases. High substrate concentration can outcompete the inhibitor at the active site, so the maximum rate is still reached.

Which enzyme of the citric acid cycle reduces FAD to FADH2?Succinate dehydrogenase, which converts succinate to fumarate. It is embedded in the inner mitochondrial membrane and is part of Complex II.

Which amino acid side chain has a pKa near 6.0 and is most useful as a buffer near physiological pH?Histidine. Its imidazole side chain can accept or release a proton close to neutral pH, which is why it often appears in active sites.

Adding an inert gas to an equilibrium mixture at constant volume: does it shift the equilibrium?No. The partial pressures of the reacting gases stay the same at constant volume, so the reaction quotient is unchanged.

A patient has a reduced FEV1/FVC ratio and elevated residual volume. Which category of lung disease fits best?Obstructive lung disease, such as asthma or COPD. Airflow limitation traps air in the lungs, which raises residual volume.

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Questions from your material

Upload PDFs, DOCX, PPTX, notes or photos of pages and get questions based on what you are actually studying.

Explanations for every answer

Each multiple-choice, true/false and short-answer question comes with an explanation so you learn why the wrong choices fail.

Export when you need it

Plus exports to PDF and DOCX, and Pro adds QTI 2.1 and Moodle XML for course platforms.

How it works

Upload your MCAT notes

Add a PDF, DOCX, PPTX, text file or photos of pages from your review books.

Choose the question type

Pick multiple-choice, true/false or short answer for the material you uploaded.

Practice and review

Answer, read the explanation, and let spaced repetition bring back the questions you missed.

Try the questions before you reread the chapter. Missing a question and then reading why the answer is right tends to stick better than rereading a page that already feels familiar. Short-answer items also make you produce the reasoning, which is closer to what the exam asks of you.

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Frequently asked questions

How many hard MCAT practice questions should I do in a session?

Shorter daily sets that you review carefully usually work better than long untimed marathons. The explanations you read after each miss matter more than the raw count.

Why do I keep missing MCAT questions on enzyme kinetics even after reading?

Reading a passage can feel like understanding without building the ability to apply it. Testing yourself on specific cases, like how competitive and noncompetitive inhibitors change Km and Vmax, exposes the gap.

Can I export the generated questions?

Yes, on paid plans. Plus includes PDF and DOCX export at $99.90/year or $9.99/month, and Pro adds QTI 2.1 and Moodle XML export at $14.99/month.

Do I need a credit card to start?

No. The free plan gives 3 generations per month and studying in the browser, and students get 40% off with a school email.

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