MCAT Science and Reasoning
Bridge undergraduate coursework and the MCAT with high-yield conceptual models across biochemistry, physics, chemistry, and behavioral science. Master passage deconstruction, experimental reasoning, and the interdisciplinary links required to score 510+.
Like Duolingo, but for MCAT Science and Reasoning. Tomo turns the whole topic into a game you play five minutes a day, until it actually sticks.
26 levels across 3 sections, about 52 minutes end to end, roughly 10 days at five minutes a day. It moves through Deconstructing Passages and Physical Principles, Biomolecular Architecture and Biochemical Pathways, and Behavioral Foundations and Strategic Integration. It assumes you already know the basics.
Free forever · No credit card · iPhone & Android

Key ideas in MCAT Science and Reasoning
- Passage stems reward tracing the independent variable to the measured dependent response.
- Knowing textbook glycolysis enzymes matters less than tracking how the drug perturbs product output.
- MCAT questions evaluate whether a manipulated input caused an observed downstream shift.
- A vehicle control isolates the carrier solvent from the active solute's effect.
- Negative controls establish baseline readouts when the active agent is absent.
- Positive controls verify that the assay reagent is functional and sensitive enough.
- Reading for directional shifts like higher Km or lower Vmax is faster than memorizing values.
- Questions refer back to specific rows, making pre-memorization a waste of testing time.
- Noticing relative order across mutants predicts catalytic efficiency shifts immediately.
- 'Most supported' stems require an explicit causal link to passage figures or text.
- Plausible outside medical facts serve as tempting trap answers if unmentioned in data.
- Direct passage evidence outranks unverified biological background claims every time.
- Titrating pH alters active site protonation states to reveal acid-base catalysis.
- Replacing water with heavy D2O tests proton transfers via kinetic isotope effects.
- Swapping buffer counterions like Na+ for K+ rarely alters acid-base catalytic mechanisms.
- Rapid exhalation blows off dissolved CO2, decreasing blood partial pressure
You've tried the other tabs
Thirty open tabs. Four facts you actually kept.
You watched. You nodded. By Sunday it was gone.
One answer, then back to scrolling.
Eight weeks. You meant to finish. You didn't.
Tomo gives MCAT Science and Reasoning the Duolingo treatment: levels, streaks, and quick quizzes that test what you just learned. That game loop is what the tabs above never had, so it's the one you actually finish.
Here's what playing it feels like
A real question from this course. Take your best guess.
A passage introduces an unstudied kinase blocker in tumor cells. What should you focus on first?
Get it right to open this lesson and 25 more in the app.
Where MCAT Science and Reasoning takes you
- 1
Deconstructing Passages and Physical Principles
- Translating Dense Passages into Testable Hypotheses
- Chemical Equilibria and Acid-Base Physiology
- Fluids, Circuits, and Biomechanics
- 2
Biomolecular Architecture and Biochemical Pathways
- Enzyme Kinetics and Metabolic Flux
- Molecular Genetics and Laboratory Techniques
- Organic Reaction Mechanisms in Biological Systems
- 3
Behavioral Foundations and Strategic Integration
- Psychological, Social, and Biological Foundations of Behavior
- Experimental Design, Error Analysis, and Test Strategy
3 sections · 8 units · 26 levels. Built to play, not to enroll.
You pick the voice
MCAT Science and Reasoning is taught in the The Professor style: clear, structured, thorough. Want a different feel? In the app you can spin up the same topic in any of Tomo's teaching styles. Same facts, totally different vibe.
More Science on Tomo
Forces, Chemistry, and Living Circuits
Discover how the universe operates across physical forces, chemical bonds, living cells, and silicon circuits. Learn the fundamental principles that connect energy, matter, and electronic signals in our everyday world.
How Matter Works: The Foundations of Chemistry
Discover the hidden logic of the physical world, from the dance of subatomic particles to the explosive energy of chemical reactions.
Advanced Molecular Engineering & Synthetic Biology
Master the art of rewriting the code of life from CRISPR-Cas9 precision to de novo protein design. This course bridges the gap between laboratory theory and the cutting edge of clinical and industrial biotechnology.
The Physics of Living Systems
Discover how the fundamental laws of mechanics, fluids, and thermodynamics dictate how living organisms survive, move, and sense the world. Bridge the gap between biology and physics through real biological machinery.
Applied Human Anatomy
Decode the architectural logic of the human body through topographical relationships, fascial planes, and systemic structural design. Move beyond simple memorization to understand how form governs function across every major system.
Forensic Science: Reading Physical Clues
Discover how real investigators extract facts from physical evidence. Learn the science of trace analysis, fingerprinting, DNA matching, and forensic timelines beyond the myths of television drama.
Start MCAT Science and Reasoning today.
Download Tomo, search MCAT Science and Reasoning, and play your first lesson in under a minute.