What age group has active enzymes?
Everyone, from birth and even before, produces enzymes that allow us to digest and metabolyze and to perform the basic, chemical level activities that are needed for life.
The question you MIGHT have been wanting to ask is, "what age group has active HORMONES?" Typically, sex hormones start to become active at about the time that secondary sex characteristics start to develop. For boys, it's hair on the legs, beard, pubic hair, voice change and other changes that start to show up like pimples. For girls it's much the same, but of course girls don't get the beard, they typically have breasts start to develop during that time. That's went he sex hormones START. If you're normal and nothing goes wrong, sex hormones will be active for the rest of your life in one degree or another. It's just that during puberty (when the sex hormones start and some argue are most active) there seems to be a "newly discovered" aspect of life that causes teens to act like it hasn't happened to anyone before them.
Maturity and experience teach us how to live with those hormones.
By lowering the activation energy in their active sites. The enzyme can just provide an area that is conducive to two substrates reaction, the enzyme can stress bond in a substrate leading to a reaction and the enzymes R group arrangement can catalyze a substrate reaction. Enzymes vary in their metabolic properties.
No age group in particular is most affected by gonorrhea. It is a sexually transmited disease which people who are more sexually active with numerous sexual partners are more likely to get. Generally people in their early 20's go through several sexual partners and are therefore, based on that alone, more susseptible to gonorrhea. The age group 20-29 with a sexually active lifestyle.