How do a single change in a nitrogen base alter the formation of a resulting protein?

answer: 45

explanationyou have to add as well to be it could be

your body is trying to warm itself up. or more precisely, sensors in your skin send messages to your brain to generate heat to your body.

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