Therefore, as gravity affects all things equally, regardless of their mass in grams or kilograms, and because 1 m/s 2 = 100 cm/s 2, the surface gravity of Earth could be expressed in cgs units as 980.665 cm/s 2 and at base 10 logarithm (log g) as 2.992.
The cell wall is only in plants, and it gives the plants structure. The cell membrane controls the movement of substances entering and leaving the cell.
The human heart, composed of specialized muscle cells, beats to a specific rhythm. The heart cell rhythm partly depends on the opening and closing of series of gateways within the cell membrane, called ion channels. Some channels let certain ions flow out, others let different ions flow in.The same membrane system is at work in other cells, helping to regulate what stays and what leaves the cell. This cell membrane gateway system is specifically called the A) sodium-chlorine pump.B) hydrogen-oxygen pump.ome channels let certain ions flow out, others let different ions flow in. The same membrane system is at work in other cells, helping to regulate what stays and what leaves the cell. This cell membrane gateway system is specifically called the A) sodium-chlorine pump. B) hydrogen-oxygen pump.