...the key of A minor. 5 n-count The key on a map or diagram or in a technical book is a list of the symbols or abbreviations used and their meanings. You will find a key at the front of the book. 6 adj The key person or thing in a group is the most important one.
ATP (Adenosine triphosphate). 1  It is the major energy currency of the cell, providing the energy for most of the energy-consuming activities of the cell. 2  It is one of the monomers used in the synthesis of RNA and, after conversion to deoxyATP (dATP), DNA.3  It regulates many biochemical pathways. It is the major energy currency of the cell, providing the energy for most of the energy-consuming activities of the cell. 2  It is one of the monomers used in the synthesis of RNA and, after conversion to deoxyATP (dATP), DNA. 3  It regulates many biochemical pathways.
ATP or adenosine triphosphate is the nucleotide which acts as a battery for cells and provides energy for many vital functions. slide 1 of 4. Like everything else, cells need energy for performing various activities which are vital for life and living beings.