Webnucleotides made of 1 deoxy/ribose, 2 phosphate grp, 3 nitrogenous base. It covers key units including. Biosynthesis of steroids (testis), drug.

Moves excess water out of the cell. Order of the polypeptide ⇒ protein’s structure and function. Webdiffers from rer both structurally and functionally, in the form of tubes arranged neatly in parallel rows or in a tangle. Engulf (phagocytosis) materials as food for the cell.