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.
1 The cell membrane controls which substances pass into and out of the cell. 2  Carrier proteins in or on the membrane are specific, only allowing a small group of very similar molecules through. 3  For instance, Î±- glucose is able to enter; but Î² â glucose is not.