cell death Flashcards
how does necrosis arise?
traumatic damage to cells
why does necrosis spread?
release of degradative enzymes from lysosomes
how does apoptosis differ from necrosis?
apoptosis is precise and repeatable deletion of cells
how are apoptotic cells removed?
by phagocytes
how do cells signal for apoptosis?
the lipid phosphatidylserine usually faces towards th inner monolayer, but it apoptotic cells it flips outwards
what happens to the chromatin in apoptotic cells?
it condenses
what enzymes are responsible for the dismantling of proteins in the cell during apoptosis?
caspases
what are viruses?
autonomous complexes of nucleic acids, which replicate inside the cell using its machinery
why might apoptosis occur in prokaryotes?
when conditions are poor, apoptosis might help provide nutrients for the other cells to use
