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An AI quiz answer generator that explains every correct choice

DeckOwl is a web app, not a browser extension. Upload your PDFs, slides or notes and it writes practice questions with the correct answer and a reason for it.

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Drop files here or browsePDF, DOCX, PPTX, text or photos of your notes · several files with Plus

Free · First set needs no signup · Creates quizzes in seconds

Practice quizzes you can check, not answers copied from a extension

DeckOwl is a web app, not a browser extension, so it cannot sit inside a live quiz and fill in answers. What it does is turn your own PDFs, slides or notes into practice questions with answers and explanations, which is what most people searching for an AI quiz answer generator actually need for studying.

Multiple-choice, true/false and short answer questions
Explanations for every correct answer
Flashcards with spaced repetition from the same material
Anki, CSV, PDF and DOCX export on paid plans

Example cell biology quiz questions, with answers

Which organelle produces most of a cell's ATP?The mitochondrion. It runs oxidative phosphorylation, which makes most of the cell's ATP.

What is the main job of the Golgi apparatus?It modifies, sorts and packages proteins and lipids for transport. Proteins from the endoplasmic reticulum are processed there before they ship out.

True or false: plant cells lack a plasma membrane.False. Plant cells have a plasma membrane inside their cell wall, so the membrane is always present.

Why do mature human red blood cells have no nucleus?They eject the nucleus to make room for hemoglobin. Fewer internal structures leave more space to carry oxygen.

In osmosis, what moves across a membrane and in which direction?Water moves from lower solute concentration to higher solute concentration, which evens out the solute on both sides.

Generate the full set

Built from your files

Upload PDFs, DOCX, PPTX, plain text notes or photos of pages read with text recognition.

Answers with explanations

Multiple-choice, true/false and short answer questions each come with the correct answer and why it is correct.

Spaced repetition

Flashcards made from the same material return on a spaced repetition schedule so you review what you forget.

How it works

Upload your material

Add a PDF, slide deck, document or notes you already have for class.

Generate questions

Choose multiple choice, true/false or short answer and let DeckOwl write the set.

Answer first, then check

Try each question yourself, then read the explanation and repeat the ones you missed.

Generated questions can be multiple choice, true/false or short answer. Each one shows the correct answer and a sentence on why, so a wrong pick tells you exactly what to review.

Free accounts get 3 generations per month and can study in the browser. Plus and Pro add unlimited generations and export, if you need questions in another tool.

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Frequently asked questions

How many practice questions should I write for cell biology?

Start with a short set for one lesson, then add questions on the topics you keep missing. Covering each topic a few times across several days works better than one long session.

How do I study cell biology with practice quizzes?

Answer each question before you check the explanation, then write down why the wrong choices are wrong. Repeat missed questions after a day or two.

Is DeckOwl a browser extension that answers quizzes?

No. DeckOwl is a web app that generates quizzes from your own files and does not read or answer questions inside other websites.

Which exports are included in the paid plans?

Plus includes PDF, DOCX, Anki and CSV export for $39 per year or $7.99 per month. Pro adds QTI 2.1 and Moodle XML export for $14.99 per month.

Generate free quizzes

Keep exploring the topic

Review the main ideas visually or practice recalling them.