10-Letter Words Containing: _,A,I,O,S,X

• movement by a cell or organism in reaction to a chemical stimulus

• a powerful neurotoxin produced by certain dinoflagellates found in red tides; it can accumulate in mollusks that feed on the dinoflagellates and cause food poisoning to humans

• A cell or organism that has six complete sets of chromosomes

• raccoon-like omnivorous mammal of Mexico and the southwestern United States having a long bushy tail with black and white rings

• a B vitamin that is essential for metabolism of amino acids and starch