Assertion: lysosome | /r/Desires | acidic environment
Facets:
value: to function
type: PURPOSE
Source sentences:
text: Because a lysosome needs an acidic environment to function properly, these organelles are encompassed in a membrane to ensure that they stay acidic; to digest things, a lysosome engulfs them, treats them with an appropriate enzyme, and then spits the results of the digestion back out for the cell to use.