So first activation energy is lowered by enzymes !
and for this question.... almost All enzymes are made of protein ....so answer is B .... protein !!!
Answer:
A is the right answer
Explanation:
Selective permeability is a property of cellular membranes that only allows certain molecules to enter or exit the cell. This is important for the cell to maintain its internal order irrespective of the changes to the environment.
Can I have brainliest
Because it is catalyst which speeds up or slows down the speed of the chemical reaction without being changed or used up
