NEET Biology Cell The Unit Of Life Based Practice Questions & Answers with Viewers Discussion and Detailed Explanation

Answer: (c)

Post-translational modification is a step in protein biosynthesis. Proteins are created on ribosomes translating mRNA into polypeptide chains. These polypeptide chains undergo post-translational modification, such as folding, cutting and other processes, before becoming the mature protein product. Proteins synthesised by the rough endoplasmic reticulum and lipids synthesised by smooth endoplasmic reticulum reach the cisternae of the Golgi apparatus. Here, they combine with carbohydrates to form glycoproteins and glycolipids. This process is called glycosylation.