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The Fundamental Unit of Life — Science STD 9 — Question

Gujarat BoardEnglish MediumSTD 9ScienceThe Fundamental Unit of Life1 Mark
MCQ
Lipids and proteins constituting the cell membrane are synthesized at:
  • ✓
    Endoplasmic reticulum
  • B
    Mitochondria
  • C
    Golgi apparatus
  • D
    Lysosome
✓

Answer

Correct option: A.
Endoplasmic reticulum
The endoplasmic reticulum bearing ribosomes on their surface called as rough endoplasmic reticlum $(\text{RER})$ which are actively involved in protein synthesis. The smooth endoplasmic reticulum $(\text{SER})$ is the major site for synthesis of lipid. In animal cells, steroidal hormones synthesized in $\text{SER}$. Lipids are synthesized in smooth endoplasmic reticulum$ (\text{SER})$ and the proteins are synthesized in rough endoplasmic reticulum $(\text{RER})$. The lipids and proteins together forms plasma membrane by the process of membrane biogenesis.

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