Why do we breathe? =_= xD

We breathe through our nose

when there is jaam in the nose, we breathe through mouth xd

who said you should your choice

golgi body just took the test on edge

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