Choose the correct words to complete the sentences. Human melanocytes are a type of cell found in skin, ear, eye and other
tissues. They are (Choose...)
cells, meaning they have a
nucleus. Melanocytes spend most of their time in
(Choose...), during which they produce the pigment
melanin. Cell division is regulated in part by genes such as
CDKN2A, which produce regulatory (Choose...) If this
gene is damaged, the cell may begin dividing uncontrollably, a
condition called
(Choose...)

What are the four basic classes of organic molecules how do they differ structurally and functionally

Adigestive system that is a series of tubes beginning at the mouth and ending at the anus is a digestive system.

Molecular models of two different substances are shown below. in the molecule on the left, the oxygen atom pulls on electrons more strongly than the hydrogen atoms. in the molecule on the right, the two oxygen atoms pull on the shared electrons with the same strength. water molecule, h,o oxygen molecule, oz when the two substances are put in the same container, they do not attract each other. why does this happen? a. they both contain oxygen. b. one is polar and one is nonpolar. c . they are both polar. d. they contain different elements.