Assertion: cell membrane's protein | /r/HasProperty | waste
Facets:
Source sentences:
text: Some proteins are attached to these mats of phospholipids to help move nutrients (such as oxygen and water) and wastes (such as carbon dioxide); some help the cell connect with and attach to the right kinds of materials (as well as other cells); and some proteins keep the cell from linking up with toxic materials as well as the wrong kinds of cells, foreign or otherwise.