Question

question 5
the rough endoplasmic reticulum is covered with ______.
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Explanation:

In cell biology, the rough endoplasmic reticulum (RER) gets its "rough" appearance because its surface is studded with ribosomes. Ribosomes are the cellular structures responsible for protein synthesis, and their presence on the RER is a key characteristic that distinguishes it from the smooth endoplasmic reticulum (which lacks ribosomes).

Answer:

ribosomes