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.
Report Abuse. 1  A LOT of misinformation here. First, do not keep the battery in the boot especially if it is a wet battery filled with acid. 2  It will stay charged for about 4 months. It will be slowly losing power the whole time, but typically one can retain at least enough to start the car after sitting for about 4 months. Given enough time the car battery will die. Once it gets a jump and is ran for a while it will re-charge, but just left sitting it will die. Depending on how good of shape the battery is it will die in a day to 2 weeks. Ashley Â· 6 years ago.