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.
Checkpoint controls in eukaryotic cells. Checkpoints serve to monitor the order of events in the cell cycle and ensure that a cell cycle event occurs only after the completion of a prior event (Weinert and Hartwell, 1989).