KX Modifier - SPECIFIC REQUIRED DOCUMENTATION ON FILE. KX -- SPECIFIC REQUIRED DOCUMENTATION ON FILE. (EFFECTIVE DATE 7/1/2002) This modifier may be used to indicate that specific required documentation is on file in the patient's medical record. Documentation must be submitted upon request.
Proteins are made of amino acids hooked end-to-end like beads on a necklace. To simulate. a protein, you will make a model of your protein using a long chenille stem (the fuzzy. covered wire) and colored beads.
For instance, the endoplasmic reticulum connects to the Golgi apparatus, and both of these units are involved in the production of new proteins. New proteins are manufactured in the endoplasmic reticulum, and from there, move to the Golgi, where they are modified and packaged for transport to other locations in the cell.