The plasma concentration of which of the following forms of vitamin D is measured to determine the vitamin D status of a person?

Because of differences in uptake between retinoids and carotenoids, the intake of vitamin A is given in units abbreviated as RAE.  What specifically does RAE stand for? 

Vitamin A is stored in the body as…

What element is at the center of the corrin nucleus of cobalamin?

This is the name for the cells that secrete mucus in mucosal tissue.

A morula is created from a single cell by the process(s) of ___________.

In the 2 –step process of  ________, the information stored in our chromosomes is used to        create functional molecules (such as enzymes) in our body.  

In which of the following tissues would desmosomes be found.

What function does  the glycocalyx serve for the cell?

What process is being carried out in this diagram?