rift valley. 1  A long, narrow valley lying between two normal geologic faults. Rift valleys usually form where the Earth's lithosphere has become thin through extension associated with plate-tectonic processes. 2  The deep undersea valley located along the center of the mid-ocean ridge.
Vacuoles and lysosomes have similar functions. Vacuoles in plant cells are in some respects the equivalent of lysosomes in animal cells. The environment inside a vacuole is slightly acid (pH about 5.0) whilst for the rest of the cytosol it is slightly alkaline (about pH 7.2).acuoles and lysosomes have similar functions. Vacuoles in plant cells are in some respects the equivalent of lysosomes in animal cells. The environment inside a vacuole is slightly acid (pH about 5.0) whilst for the rest of the cytosol it is slightly alkaline (about pH 7.2).
The role played by vacuoles in animal cells is not as important as in plant cells. The functions that vacuoles perform in different types of cells are listed below. Maintaining the turgor pressure and pH in cells are the important vacuole functions.Taking into account these and other functions mentioned above, we can say that vacuole plays an important role in the functioning of plant cells.he functions that vacuoles perform in different types of cells are listed below. Maintaining the turgor pressure and pH in cells are the important vacuole functions. Taking into account these and other functions mentioned above, we can say that vacuole plays an important role in the functioning of plant cells.