When the rays are focused in a single area, the area is called the

The Metathesaurus can be used in which of the following applications?

A. automated indexing research B. natural language processing C. information retrieval from databases D. linking patient records to related information in bibliographic, full-text, or factual databases E. all of the above

. The sum of all of the cellular processes that build, maintain, and supply energy to living tissue is the process of ________. 

Fill in the blank(s) with the appropriate word(s).