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.
Scotty Kilmer, mechanic for the last 46 years, shows how you can fix a car that pulls to one side when driving. And, If you like my car help, be sure to watch my live car talk show every Saturday morning at 10 AM CST on YouTube.I answer your car questions LIVE there.cotty Kilmer, mechanic for the last 46 years, shows how you can fix a car that pulls to one side when driving. And, If you like my car help, be sure to watch my live car talk show every Saturday morning at 10 AM CST on YouTube. I answer your car questions LIVE there.