Homework help plz help!!!
2007-03-28 09:32:55 · 3 answers · asked by Anonymous in Science & Mathematics ➔ Biology
Because lactose requires more steps to metabolize than glucose. You don't want to have to crank out the special enzymes needed for lactose metabolism unless you have no other choice, because it takes energy to make enzymes. It's just a matter of energy economy.
2007-03-28 09:39:08 · answer #1 · answered by Anonymous · 0⤊ 0⤋
quelisto answer was gud!
lactose is a more complex molecule than glucose-why would a cell produce lactase when glucose is present.only when glucose is absent and lactose is present is lactase produced because at the end of the day the lactose is gonna be broken down to glucose monomers.
2007-03-28 16:54:16 · answer #2 · answered by cute-goddess 5 · 0⤊ 0⤋
It doesn't waste time and cellular energy producing an enzyme that doesn't have an available substrate.
2007-03-28 16:56:36 · answer #3 · answered by Michael 1 · 0⤊ 0⤋