Codon & Biology Exam Practice Hub
Move from lookup to practice, memorization, explanations, and resources in one place.
Pick your exam lane first. Then move through a clear study path: practice, memorize, explain, and look up only what matters for the test.
MCAT
Passage-based and discrete questions with a strong biochemistry and gene expression focus.
AP Biology
Organize study by unit and science practice: concepts, visual interpretation, data analysis, and FRQ work.
Learning modes
Every topic should support a clear task: practice, memorize, explain, or reference.
Practice
Single-question, immediate feedback drills.
Memorize
Flashcards and quick recall for amino acids and codons.
Explain
Short concept notes, pitfalls, and exam framing.
Reference
Tables, wheels, converters, and lookup tools.
High-yield topics
These topic cards give you the shortest path from concept review to question practice.
Translation
Start codon, stop codons, tRNA, anticodons, wobble.
Central dogma
DNA to RNA to protein and where each step is tested.
Codon table
Fast lookup for amino acid assignment and degeneracy.
Codon wheel
Visual lookup for memorizing the genetic code.
Amino acid codes
One-letter and three-letter code review.
DNA to protein
Convert sequence to protein, then verify the reading frame.
Quick links
Fast internal shortcuts for moving between the hub, practice, and lookup tools.