Enzymes are biological catalysts. Catalysts work by lowering the amount of energy required to set off a chemical reaction.
Because it is polar and it is to large to cross the membrane and because the concentration gradients are to strong so they have to be diffused.
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Answer:
Fat, starch, sugars and protein.
Explanation:
Enzymes break these biomacromolecule bcoz cells get energy by breaking them.
