Guide. A bone density test measures the density of minerals (such as calcium) in your bones using a special X-ray. This information is used to estimate the strength of your bones.
Animal cells do have vacuoles, but they are smaller, larger in number (plant cells usually have just one or a few large vacuoles) AND serve a somewhat different purpose than those of plants.
Peroxisomes breakdown fatty acids to sugars, also. It is easier to transport and use as a energy source. Vacuoles/vesicles are found in both animal and plant cells, although it is more of a plant cell organelle since animal cells have lysosomes. They are a membrane-bounded sac in the cytoplasm of some cells. Vacuoles are stationary while the vesicles are mobile. Vacuoles are used for storage or digestion purposes for different kinds of cells. There are three types of vacuoles; food vacuoles, contractile vacuoles, and central vacuoles.