The plasma membrane is comprised of a bilayer ofa. phospholipidsb. disacharidesc. polypeptidesd. nucleic acids

The plasma membrane is comprised of a bilayer of phospholipids.

So the correct answer is A.

Hope this helps,

Davinia.

c

explanation:

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