The glands of vertebrates are derived from epithelium.

What is a limitation of using a chemical formula, such as c6h1206, to represent a compound? the chemical formula does not show the types of elements that make up the compound. the chemical formula does not show how the atoms are connected to one another the chemical formula does not show the number of atoms of each element in a molecule. the chemical formula does not show the chemical symbols of the elements in the compound

Has anyone taken the genetics unit test in connexus? not looking for answers, just a little bit what to expect and some with studying.

Some substances but not other can cross the (blank) membrane of a cell