Which statement best explains how the cell membrane helps a cell remove waste?
A. Simple sugars enter the cell through a transport protein.
B. The cell membrane surrounds particles and forms a vacuole
around them.
C. Oxygen molecules move into the cell through the layer of
phospholipids.
D. Carbon dioxide molecules pass out of the cell through the layer of
phospholipids.

Which of the following matches the organisms described with the correct domain? a. archaea--multicellular, eukaryotic organisms that do not have cell walls b. eukarya--single-celled and multicellular organisms, with a defined nucleus and a variety of nutritional sources c. bacteria--unicellular, eukaryotic organisms with cell walls that do not contain peptidoglycan d. bacteria--unicellular, eukaryotic organisms that always lack cell walls