Which one of the following functions is not carried out by smooth endoplasmic reticulum?
[amp_mcq option1=”Transport of materials” option2=”Synthesis of lipid” option3=”Synthesis of protein” option4=”Synthesis of steroid hormone” correct=”option3″]
This question was previously asked in
UPSC CDS-1 – 2019
The endoplasmic reticulum (ER) is involved in various cellular functions. The rough endoplasmic reticulum (RER) is characterized by the presence of ribosomes on its surface and is primarily responsible for the synthesis and modification of proteins destined for secretion, insertion into membranes, or delivery to other organelles. The smooth endoplasmic reticulum (SER) lacks ribosomes and is involved in lipid synthesis, steroid hormone synthesis, detoxification, and calcium storage. Protein synthesis is mainly carried out by ribosomes, either free in the cytoplasm or attached to the RER. Therefore, synthesis of protein is not a primary function of the smooth endoplasmic reticulum.