AP for Anterior/Posterior
Pyruvic acid enters and carbon dioxide exits.
the bladder
The coolant enters the engine by way of the lower radiator hose and exits the engine by way of the upper radiator hose.
The Cell membrane.
The cell membrane
THEY DON'T.
Stomata.
controls what enters and exits membrane by using proteins
stoma/stomata
anywhere anyhow anyway anywhen head
The cell membrane controls what enters and exits a cell.
the cell membrane.