That year, driving a car 10,000 miles cost 9 cents a mile, and gasoline sold for 27 cents per gallon. Methodology Cost calculations in this edition of Your Driving Costs are comparable to the 2012 version. The process used to estimate annual driving costs is proprietary to AAA.
Enzymes are produced by microorganisms. These microorganisms can be modified to produce enzymes with much better yield properties and purity. Such GMMs (genetically modified micro-organisms) are however not part of the final enzyme product.
How Enzymes work. 1. Enzymes catalyse only those reactions that happen naturally. 2. Enzymes are specific: each enzyme is responsible for only 1 kind of reaction, because they are shaped to work with only a certain substrate that matches enzyme's active site. 3. Enzyme changes its conformation when substrate bonds to its active site.