Assertion: mitochondrion | /r/CapableOf | act as storage tanks
Facets:
value: for calcium ions
type: PURPOSE
Source sentences:
text: Beyond their role as energy converters, scientists have also recently uncovered how mitochondria play other critical roles: They act as storage tanks for calcium ions, which are involved in blood clotting and muscle contraction; produce the iron compound needed for red blood cells to transport oxygen; and, last but not least, they’re being studied as the lead “executioners” of cells, with the ability to trigger cell death.