How does tobacco smoke affect the body

It is not "It parayzes cilia in the bronchi allowing inhaled particles to enter the lung"

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

c. the initial amount of money placed in the savings account