Sherlock: Holmes Has a New Partner in Season Four of PBS Series; Emmy Noms. Check out this first look of the fourth season of the Sherlock TV series from the BBC. Stateside, the detective drama airs on PBS.
Anabolic reactions build new molecules and/or store energy. The energy of catabolic reactions is used to drive anabolic reactions. The energy for chemical reactions is stored in ATP. Often when I ask students What is ATP the answer they give is Energy.
A major role of ATP is in chemical work, supplying the needed energy to synthesize the multi-thousands of types of macromolecules that the cell needs to exist. ATP is also used as an on-off switch both to control chemical reactions and to send messages.