LIFE SCIENCE

Detailed explanation-1: -The endoplasmic reticulum can either be smooth or rough, and in general its function is to produce proteins for the rest of the cell to function. The rough endoplasmic reticulum has on it ribosomes, which are small, round organelles whose function it is to make those proteins.

Detailed explanation-2: -The RER is associated with many roles in protein synthesis, which also include post-translational modifications, folding, and sorting. Membrane-bound ribosomes in the RER translate the mature mRNA transcript into amino acids that are attached to become polypeptides.

Detailed explanation-3: -Final answer: The rough endoplasmic reticulum has ribosomes attached to it.

Detailed explanation-4: -Ribophorin, also known as a ribosome receptor protein, is a transmembrane glycoprotein that aids in the binding of ribosomes to the endoplasmic reticulum’s outer surface, generating rough endoplasmic reticulum. They attach the ribosome’s larger subunit (the 50S) to the rough endoplasmic reticulum.

Detailed explanation-5: -Rough endoplasmic reticulum (RER) carry ribosomes on their surface and are involved in the process of protein synthesis. The secretory proteins are synthesized on ribosomes which are present on the surface of endoplasmic reticulum.