Question

a certain type of specialized cell contains an unusually large amount of rough endoplasmic reticulum (er). which of the following functions is this cell type most likely specialized to perform? a the production and secretion of steroids b the destruction of toxic materials produced in other cells of the organism c the synthesis of polysaccharides for energy storage d the production and secretion of proteins

Explanation:

Rough endoplasmic reticulum (ER) is studded with ribosomes. Ribosomes are the sites of protein synthesis. Cells with a large amount of rough ER are specialized for protein production and secretion. Steroids are produced in smooth ER, toxic material destruction is related to peroxisomes, and polysaccharide synthesis isn't the main function of rough - ER cells.

Answer:

D. The production and secretion of proteins