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STD 11 - 8. Cell the unit of life — BIOLOGY STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 ScienceBIOLOGYSTD 11 - 8. Cell the unit of life1 Mark
MCQ
The Golgi complex plays a major role
  • A
    as energy transferring organelles
  • ✓
    in post translational modification of proteins and glycosylation of lipids
  • C
    in trapping the light and transforming it into chemical energy
  • D
    in digesting proteins and carbohydrates.
✓

Answer

Correct option: B.
in post translational modification of proteins and glycosylation of lipids
b
(b) : Post translational modification $(PTM)$ is a step in protein biosynthesis. Proteins are created on ribosomes translating $mRNA$ into polypeptide chains. These polypeptide chains undergo $PTM$, such as folding, cutting and other processes, before becoming the mature protein product. Proteins synthesized by the rough endoplasmic reticulum and lipids synthesized 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.

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