The memrise blog has some very important info about how one should create cards. Making them ask about only one thing in isolation is one of them. For example

The memrise blog has some very important info about how one should create cards. Making them ask about only one thing in isolation is one of them. For example all downloadable Kanji decks basically ask "Kanji -> meaning, kun readings, on readings, nanori readings, translation, example jukugo, example sentence, pronunciation, stroke order, ...", i.e. not atomic at all. I have instead made my own deck where each Kanji has multiple cards that ask for different pairs of information. One of the important reasons is that I may have more trouble remembering one of those than the others, and that should not make me have to redo those others, since SRS should ask when I'm about to forget.