Plant cell vacuoles serve the same vital storage functions for nutrients, water and wastes as those in animal cells but are much larger because they also provide structural stiffness in combination with the plant's cell walls. This is why water-starved plants droop; their cells have essentially deflated. If a living but wilted plant once again receives sufficient water, it regains its former stiffness as the vacuoles refill.Know More
Because of the size of the vacuoles in plant cells, often occupying most of the space in each cell, they are used for many of the functions for which animal cells use other organelles. For instance, plant vacuoles tend to be acidic and contain enzymes that act like those in lysosomes in animal cells. They also contain many compounds important in cell defense. Sometimes, they are even used to trap pathogens and toxic substances. Their importance in plant cells is much greater than in animal cells.
Plant vacuoles have variety beyond the large, water-filled central vacuoles, however. Many fruits and seeds have protein-storing vacuoles, for instance. Some plants even use vacuoles for rapid defensive movements. While plant cell vacuoles differ greatly from animal cell vacuoles, they have several similarities to those in algae and even in yeasts.Learn more about Molecular Biology & DNA
Plant and animal cells both have a nucleus, endoplasmic reticulum, ribosomes, a Golgi apparatus, vesicles, mitochondria and a cell membrane. Each of these components work together to keep the cell healthy and functioning properly. In addition, plant and animal cells are eukarotic, meaning they are multicellular.Full Answer >
There are many differences between plant and animal cells, but one of the most obvious differences is that plant cells have a cell wall. Animal cells do not have a cell wall.Full Answer >
Plant cells differ from animal cells in their possession of chloroplasts, a cell wall, a large central vacuole and their relative lack of an internal cytoskeleton. Plant cells gain their form and rigidity from the pressure of their large, water-filled vacuoles against their tough cellulose cell walls. Animal cells must rely on protein-based skeletal structures within the cell to maintain their shape.Full Answer >
Cytokinesis is accomplished in animal cells by a narrowing cleavage furrow that pulls inward and eventually splits the cell, while plant cells divide through the formation of a new cell wall that grows outward from the central portion of the cell. Because animal cells have a movable plasma membrane instead of the stiff outer cell wall which plant cells possess, the cleavage furrow can easily pull inward until the cell is physically split. A plant cell's stiff outer wall, however, does not permit this type of pliability, and requires the construction of a new cell wall to divide.Full Answer >