Ionic Relations of Cells of Chara Australls X. Effects of Bicarbonate Ions on Electrical Properties

Abstract

When bicarbonate ions were added to the external medium the plasmalemma of cells of Ohwra australis became hyperpolarized. The potential difference (p.d.) frequently changed from -150 or -160 mY to -200 or -220 mY. An increal!El in membrane resistance also occurred.