9). In the case of K + and Cl - , the electrical and concentration gradients of molecules work against each other. K + is attracted toward the inside of a cell because of the inside-negative membrane potential, but the moleculeâs concentration gradient works in the other direction.
Directory Definition. The term directory is used in a computer software context to refer to what appears to the user to be a container or folder1 that can hold files and other directories. A file is a named collection of related data that appears to the user as a single, contiguous block of information and that is retained in storage.
A web directory or link directory is a directory on the World Wide Web. A collection of data organised into categories It specializes in linking to other web sites and categorizing those links. web directory is not a search engine and does not display lists of web pages based on keywords; instead, it lists web sites by category and subcategory.