Polysome is formed by:
Correct answer: C. Several Ribosomes attached to a single mRNA
- A. A Ribosome with several subunits
- B. Ribosomes attached to each other in a linear arrangement
- C. Several Ribosomes attached to a single mRNA
- D. Many Ribosomes attached to a strand of endoplasmic reticulum
Explanation
Ribosomes may occur in rosettes or helical groups called polyribosomes or polysomes (Gk. Poly- many, soma-body). The different ribosomes of a polyribosome are connected with a 10 -20 Å thick strand of messenger or mRNA and its maintenance requires energy. Polyribosomes are formed during periods of active protein synthesis when a number of copies of the same polypeptide are required.
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