Question

what is the main function of the smooth endoplasmic reticulum in a plant cell? to break down sugar and release energy that the cell can use to produce steroid hormones to give structure and organization to the cell to control which substances enter and leave the cell

Explanation:

The smooth - endoplasmic reticulum is involved in lipid synthesis, including the production of steroid hormones. Breaking down sugar for energy is mainly mitochondria's function, giving cell structure is cytoskeleton's role, and controlling substances' entry/exit is the cell membrane's function.

Answer:

to produce steroid hormones