Re: Why does heating an object inhibit active transport?

Active transport requires energy in the form of ATP, heat does not provide
energy for cellular processes.  I don't know how hot the heat treatment of
the yeast was, but ordinary yeast has trouble at temperatures above 30
degress celcius.  The proteins involved in active transport probably do not
function optimally when they are heated.  Proteins tend to denature (fall
apart) at high temperatures.

Dmitri