<prompt> CD 95 is a marker of:Intrinsic pathway of apoptosis.Extrinsic pathway of apoptosis.Necrosis of cell.Cellular adaption.  <response>: -In the activation of Extrinsic pathway of apoptosis, binding of Fas ligand takes place to CD95 Fas; member of TNF receptor family or binding of TRAIL TNF related apoptosis-inducing ligand attaches to death receptors DR4 and DR5. -This induces the association of FADD Fas-associated death domain and procaspase-8 to death domain motifs of the receptors resulting in activation of caspase 8 in humans caspase 10 which finally activates caspases- 3 and 7 that are final effector caspases. ALSO KNOW: Necroptosis- cell death is initiated by engagement of TNF receptors. Receptor-interacting protein RIP kinases are activated, initiating a series of events that result in the dissolution of the cell, much like necrosis Pyroptosis - proinflammatory programmed cell death that is different than apoptosis. Pyroptosis involves caspase-1 and 11. 