Many enzymes consist of a protein and a non-protein (called the cofactor). The proteins in enzymes are usually globular. The intra- and intermolecular bonds that hold proteins in their secondary and tertiary structures are disrupted by changes in temperature and pH. This affects shapes and so the catalytic activity of an enzyme is pH and temperature sensitive.
Everyday in the U.S. millions of cars and trucks idle needlessly, sometimes for hours. You may not be able to avoid keeping your engine running when youâre stopped at a traffic signal or stuck in slow-moving traffic. But other times idling is unnecessary. An idling car can release as much pollution as a moving car.
How long did it take to recharge? About an hour. Thanks to Tesla's Superchargers, that's a lot less time than an electric car ordinarily takes to charge, especially one that can go 270 miles. On the other hand, it's much longer than it takes to fill up a gas tank. So, again, driving an electric car on an interstate run requires a bit more planning.