LIFE SCIENCE

Detailed explanation-1: -The smooth endoplasmic reticulum functions in many metabolic processes. It synthesizes lipids, phospholipids as in plasma membranes, and steroids. Cells that secrete these products, such as cells of the testes, ovaries, and skin oil glands, have an excess of smooth endoplasmic reticulum.

Detailed explanation-2: -Smooth ER is also involved in the production of steroid hormones in the adrenal cortex and endocrine glands.

Detailed explanation-3: -In liver cells the smooth ER contains enzymes for the detoxification of harmful drugs and metabolic by-products. In the reproductive organs, smooth ER in the cells produces the steroid hormones testosterone and estrogen.

Detailed explanation-4: -For example, steroid hormones are synthesized (from cholesterol) in the ER, so large amounts of smooth ER are found in steroid-producing cells, such as those in the testis and ovary.