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.
To keep your car running well, you should change engine oil of your 2008 Mini Cooper D (Diesel) regularly. It change cycle can be as few as 3 months or 3000 miles to as long as 20, 000 miles or 24 months depending on your driving habits and your 2008 Mini Cooper D (Diesel) type.