Rotation is the act of raising the nose of an aircraft (by pulling back slightly on the control yoke or stick) during the take-off roll, so that it leaves the runway. Rotation allows for a precise, positive departure from the runway.
Crenation is the loss of water from an animal cell due to osmosis. Lysis is the rupture of the cell wall due to too much water moving into an animal cell due to osmosis. Both â¦crenation and lysis have drastic effects on the animal cell.
Crenation occurs because in a hypertonic environment, (that is, the cell has a lower concentration of solutes than the surrounding extracellular fluid), osmosis (the diffusion of water) causes a net movement of water out of the cell, causing the cytoplasm to decrease in its volume.