Generally speaking, enzymes (which amylase happens to be) do not undergo any permanent structural change while carrying out their function. Some do exhibit transient conformational change during a reaction, but upon completion regain their original form.
So your initial assumption is correct: once amylase has finished catalyzing the breakdown of starch into less complex sugar molecules, it moves on and repeats the process over and over.
I’m sorry I don’t understand that at al
The lipid bilayer works as a barrier that protects the cell from outside dangers.
C. prevent the passage of certain molecules into the cell
Hope I helped! :)
Water molecules ,some ions ,non polar compounds and glucose can pass through a cell membrane
