Test yourself on the science. Built around the MCAT and the first years of medical school, and useful to anyone brushing up.
Hi there!
Every science subject on the exam, all multiple choice.
A head start on first- and second-year courses.
These questions are for practice. For anything high-stakes, double-check with your course materials and official AAMC resources. Topic photos are in the public domain, from NIH, NASA, the USDA, the U.S. military and historical archives.
New research, explained.
Tap a card to turn it over.
Summaries are written by BioGrove from the linked reports. Videos are embedded from YouTube and belong to their creators.
Every question you answer earns XP. Grow your title and collect badges along the way.
How BioGrove works and the rules for using it, in plain language. Last updated October 28, 2026.
BioGrove is a place to read about science and test yourself on it. Nothing on it is medical advice, and it doesn't replace a doctor, your coursework or official exam prep. Don't use it to make decisions about anyone's health.
MCAT® is a registered trademark of the Association of American Medical Colleges (AAMC). USMLE® is a registered trademark of the Federation of State Medical Boards (FSMB) and the National Board of Medical Examiners (NBME).
BioGrove is independent. It isn't affiliated with, sponsored by or endorsed by any of these groups. Subject names follow the AAMC's public content outline.
Every practice question was written for BioGrove. None are copied from AAMC materials, real exams or other prep companies.
We work to keep them accurate, but mistakes can slip through, so check anything important against your textbooks.
Each summary is written in our own words from a published report and links to the original. The articles, images and findings belong to their publishers and authors. The drawings on each story were made for BioGrove. Videos are embedded from YouTube and belong to their creators.
Summaries simplify the research, so read the original before you cite it.
The "Latest from Harvard" list shows headlines and short descriptions from the Harvard Gazette's public news feed. Each one links to the full story at Harvard, and they belong to Harvard. BioGrove is not affiliated with Harvard University.
BioGrove saves your name (if you add one), daily goal, theme and quiz progress so you can pick up where you left off. Guest progress stays in this browser. Signed-in progress is stored separately for your account on this device and synced to BioGrove through Supabase. BioGrove has no ads, doesn't track you, and never sells or shares your data.
"Reset progress" in the profile menu erases your saved progress. Fonts load from Google Fonts. Science News videos play from YouTube in its privacy-enhanced mode, and YouTube's own privacy policy applies to them.
Discussions are for talking about the science with other people who love it. Joining is optional and for people 13 and older. To keep it a good place:
Report anything that breaks these rules. Moderators can hide or remove posts and suspend accounts. If you or someone you know is thinking about suicide, call or text 988 to reach the Suicide & Crisis Lifeline. If someone is in danger right now, call 911.
What you post is yours. By posting it, you let BioGrove show it on the site. Don't post anything you don't have the right to share.
BioGrove is for readers 13 and older. If you're under 18, use it with a parent's or guardian's permission.
BioGrove is provided as is. XP, titles and scores are there to keep you motivated. They don't predict how you'll do on any exam, and we can't be responsible for decisions you make based on the site.
The Outfit, Overpass and Caveat fonts are used under the SIL Open Font License. The icons and drawings were made for BioGrove.
The photos on the Practice topics are in the public domain and come from Wikimedia Commons. No permission is needed to use them, but here's who took them:
Have a question, found a mistake, or have a copyright concern? Contact details are coming soon.
Tip: press 1–4 or A–D to answer, and Enter to keep going.