What happens when the concentration of solutes
reaches equilibrium?
A. They are selectively permeable
throughout a membrane.
B. They are the same throughout a
system.
C. They move from high to low.

I think A is the right answer..

please mark me as a brainlist

enzyme active site and substrate specificity

enzymes bind with chemical reactants called substrates. there may be one or more substrates for each type of enzyme, depending on the particular chemical reaction. in some reactions, a single-reactant substrate is broken down into multiple products