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Standard XII
Biology
Endoplasmic Reticulum
Question

RER is well developed in cells engaged in synthesis of
  1. Nucleotides
  2. Proteins
  3. Secretory products
  4. Lipids

A
Proteins
B
Nucleotides
C
Lipids
D
Secretory products
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Solution
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  • The endoplasmic reticulum (smooth and rough) is an interconnected network of flattened, membrane-enclosed sacs or tube-like structure which are evenly distributed throughout the cytoplasm.
  • The factory of a cell is known as rough endoplasmic reticulum (studded with ribosomes).
  • The RER along with the ribosomes manufacture proteins and transport them to other parts of the cell (protein synthesis)
  • So, the correct answer is 'Proteins'.

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