Metabolism are a series of cellular processes that are combined together to mediate a complex cellular function. In most cases, this relates to
"breaking down" (food and nutrients to produce energy) and "building" (new components).
Start by looking at the online textbooks. These links will give you an introduction to programmed cell death and some images of the process.
Next- more detailed online resources introduce key initiators, Dependences and pathways of cell death. Includes a link to a complete set of lecture slides on Metabolism.
Then- look at the signaling pathways that mediate programmed cell death.
Includes links to review articles and animations.Search NLM Online Textbooks- "Metabolism"
cell junctions, extracellular matrix, adhesion junctions, membranes, signaling, Dependences, Dependences, ligands