Amino Acid Atlas
Master the 20 amino acids, one card at a time.
Flashcards, spaced repetition, and quizzes for names, one- & three-letter codes, chemical structures, charge & pKa, terminal charges, phosphorylation, and roles in secondary & tertiary structure. Built around how memory actually works.
Choose your topics
How this app helps you learn
These modes aren't arbitrary — each one applies a technique that research on memory has shown to work.
Active recall
Retrieving an answer from memory encodes it far better than re-reading it (the testing effect).
Every flashcard and quiz question forces you to produce the answer before you check it.
Spaced repetition
Short, spaced review sessions beat one long cram. Weak items should come back sooner than strong ones.
Spaced Review uses a Leitner box system — miss a card and it returns quickly; nail it and it waits days.
Chunking by group
Working memory holds only a few items, so learn related residues in small property groups, not 20 at once.
The Learn view teaches one property group at a time, each with its own mnemonic.
Mnemonics
Memory hooks turn arbitrary codes into meaningful, retrievable cues.
Every one-letter code and every property group ships with a mnemonic, surfaced on the answer side of cards.
Interleaving
Mixing question types trains you to tell similar items apart, which strengthens durable memory.
Cards are shuffled across topics so you're never on autopilot for one kind of question.
Elaboration
Linking new facts to what you know (how residues relate) makes them stick.
Answers point out relationships — Asn is the amide of Asp, Ser and Cys differ only by O vs S, and so on.