I think it is A but not 100% sure. Think of an enzyme like a key unlock the lock is the protein. And to activate getting inside your car or house you have to fit the key into the lock.
she asks him not to swear by the moon because the moon is not constant enough.
H O P E T H I S H E L P E D <3
Bacteria's cell wall is made of peptidoglycans; among protists Algae have cell walls made of cellulose.
Fungi's cell wall is made up of chitin.
Plants cell wall is made of cellulose.
Abundant (now I'm just adding characters)
