Here are 3 triple stumpers from the 10-18-2018 Jeopardy! match.

AP BIOLOGY ($1000) Latin for “whip” gives us the name of this hairlike appendage, used for locomotion by most bacteria

ONE-LETTER RESPONSES ($2000) In chess notation, this, not K, denotes a knight

TRAITOROUS ACTIVITY ($2000) In 480 B.C. the traitorous Ephialtes helped the Persians outflank the Greeks at this mountain pass

The players got all these clues in AMERICANA:

($400) For the Bicentennial, Pez put is first real people on dispensers, one being this Kentucky frontiersman
($800) Named for his literary relative, Edgar Allan Poe was named ot the 1st of these elite college athletic teams in 1889
($1200) Known as “The Liberty Bell of the West”, the Kaskaskia Bell is found on an island in this state
($1600) Walter Chrysler & Elizabeth Arden are among those taking a “snooze” at this New York cemetery near Tarrytown
($2000) A witness in a 1950s Senate crime probe invoked this, refusing to answer “on the grounds it might tend to criminate him”

ANSWERS: show

Today’s Daily Doubles and more information on Final Jeopardy! on Fikkle Fame’s full Daily Jeopardy! Recap