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.
Main Difference. The major difference between the plan and animal vacuoles is the number of vacuoles functioning in the cell. This is the animal cell that has one or more vacuoles but the plant cell contains only one vacuole. The size of the animal vacuoles is relatively smaller as compared to the plant cell vacuole.