Question

Polyribosomes are aggregation of

• A. ribosomes and $r RNA$
• B. peroxisomes
• C. several ribosomes held together by a string of $mRNA$
• D. $rRNA$

Answer 1

Answer: (C)

several ribosomes held together by a string of $mRNA$

Answer 2

Ribosomes may occur singly as monosomes or in rosettes and helical groups called polyribosomes. The different ribosomes are connected with a $10 - 20?$ thick strand of $mRNA$. They are formed during periods of active protein synthesis when a number of copies of the same polypeptide are required