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 accounting information system (AIS) is a system of collecting, storing and processing financial and accounting data that is used by decision makers.An accounting information system is generally a computer-based method for tracking accounting activity in conjunction with information technology resources.The resulting financial reports can be used internally by management or externally by other interested parties including investors, creditors and tax authorities.n accounting information system is generally a computer-based method for tracking accounting activity in conjunction with information technology resources.