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.
Â· Ribosomes are non-membrane bound organelles responsible for the production of proteins within the cell. Â· The endomembrane system of the eukaryotic cell consists of the nuclear envelope, the endoplasmic reticulum, the Golgi apparatus, and various vesicles (which serve in the transport of materials within the cell).