1. Tardigrade
  2. Question
  3. Biology
  4. Majority of proteins (of intracellular use) are not synthesized on: A- Ribosomes produced in the nucleolus. B- Ribosomes attached with ER and nuclear membrane. C- Ribosomes present in the chloroplast. D- Free ribosomes of eukaryotic cells.

Q. Majority of proteins (of intracellular use) are not synthesized on:
A- Ribosomes produced in the nucleolus.
B- Ribosomes attached with ER and nuclear membrane.
C- Ribosomes present in the chloroplast.
D- Free ribosomes of eukaryotic cells.

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Solution:

All ribosomes are synthesized and assemble in nucleolus. Most of the protein are synthesized in cytosol of the cell. Some proteins that are produced in secretory cells are synthesized by ribosomes attach to rough endoplasmic reticulum and nuclear membranes. These include the digestive enzymes produced in the stomach and the protein hormones like insulin produced in the pancreas.