Focused
MCAT prep.

Pick a topic and answer 10, 20 or 40 questions. Every answer is explained, and your progress is tracked skill by skill.

Coming soon to iPhone and iPad Free to download
Quanta home screen with a Jump back in card and subject tiles for General Chemistry, Organic Chemistry, Biology and Biochemistry, Physics, and Psychology and Sociology, with CARS coming soon
A Maslow’s hierarchy question with the pyramid drawn and one level highlighted

How it works

Practice a little at a time.

Choose the topics you want, answer a short set, and read why each answer is right or wrong. Quanta keeps track of which skills are solid and which need more work.

Short sets

Choose 10, 20 or 40 questions from any mix of topics, so a session fits into whatever time you have.

An explanation for every answer

See why the correct answer is right, what each wrong choice gets wrong, and the worked math for calculations.

Progress by skill

Each topic is split into the skills it tests, so you can see exactly what to review next.

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Subjects

The MCAT science sections, covered.

General Chemistry, Organic Chemistry, Biology & Biochemistry, Physics, and Psychology & Sociology, organized by the AAMC content categories. CARS is in development.

Browse subjects

  • 6,000+questions, each with an explanation
  • 62topics across five subjects
A ramp physics question answered incorrectly, showing the note on the wrong choice, the reason, and the worked math

Accuracy

Checked against published sources.

Answers and explanations are checked against references such as LibreTexts, NCBI’s StatPearls and university course materials, and every question has been through an independent second review.

If something still looks wrong, flag it from the question screen. The report reaches us with the question’s details filled in.