the free energy of the reactants is greater than that of the products. induced-fit model. A model of enzyme-catalyzed reactions in which the enzyme changes shape when substrates bind to the active site; this change in shape is called an induced fit. lock-and-key model A model of enzyme-catalyzed reactions in which the enzyme is a rigid lock and the substrates are the keys that fit into the lock and then react.
System administrator. For the privileged user account, see Superuser. A system administrator, or sysadmin, is a person who is responsible for the upkeep, configuration, and reliable operation of computer systems; especially multi-user computers, such as servers.
An administrator should understand the big picture of what technology can do for a firm, its lawyers and its clients. But a principal administrator who doesnât understand finance and accounting adequately is an administrator incapable of adequately overseeing the financial managers and the firmâs finances themselves. He or she serves at his or her own - and the firmâs - potential peril.