A group of ribosomes attached to mRNA is known as:

polysomes

The correct answer is Option (2) – polysomes

A group of ribosomes attached to mRNA is known as polysomes.

Explanation:

• Polysomes, also called polyribosomes, are clusters of multiple ribosomes that are bound to a single mRNA molecule during protein synthesis.
• These polysomes enable efficient translation of the mRNA, as multiple ribosomes can simultaneously synthesize multiple copies of the same protein from the same mRNA strand.
• Polypeptide refers to a chain of amino acids joined by peptide bonds, polymer is a large molecule composed of repeating structural units, and monomer is a molecule that can bond to other identical molecules to form a polymer.