Free & open · original questions

The MCAT, one testable idea at a time.

A free, keyboard-first question bank with original, application-style questions and a full rationale for every choice — filed by AAMC content category, built for focused review, not cramming.

⌘ Keyboard-first◒ Dark mode by default✓ 100% free
See it in one question

Every question earns its explanation.

Not just an answer key — a rationale for why each choice is right or wrong, plus the one rule worth banking. Answer this one:

6ASensory processing · Visual depth cuesMonocular vs. binocular

A patient sustains an injury causing complete, permanent loss of vision in the right eye; the left eye is normal. Which depth cue is the patient now unable to use?

  • AInterposition
  • BRetinal (binocular) disparity
  • CRelative size
  • DMotion parallax
AD to answer

Retinal disparity is a binocular cue — the brain compares the two slightly different retinal images to judge depth. With one eye there's no second image, so it's lost. Interposition, relative size, and motion parallax are all monocular and survive with one eye.

Bank thisOnly two cues are binocular: retinal disparity and convergence. A one-eyed patient loses exactly those two.
The idea

Organized by testable idea — the grain size that actually helps.

"Weak at Psych/Soc" is too vague to fix. "Shaky on visual depth cues" is a studiable, seal-able unit. Open MCAT files every quiz at that level, mapped to the official AAMC hierarchy, so a wrong answer points you at exactly what to drill.

Section Content category Testable idea Quiz
Built for studying

A workspace, not a worksheet.

Keyboard-first

Move at the speed you think

Answer with A–D, submit and advance with Enter, jump to search with “/”. Built for power users.

Progress

Mastery & streaks

Per-idea mastery percentages and a daily streak, saved on your device — you always know what's solid.

Dark mode

Made for late nights

An excellent dark theme by default, near-monochrome, low glare — color reserved for right, wrong, and progress.

Original & free

No paywall, ever

Every question is written from scratch to mirror MCAT reasoning. Free to use, free to keep — no account required.

Free, and staying free.

If Open MCAT helped your studying, you can leave a small tip to support new question sets. No pressure — the whole thing is yours either way.

♥ Leave a tip