Question

The association of more than one ribosome with a single molecule of mRNA complex is known as?
(a) Polysome
(b) Polypeptide
(c ) Polymer
(d) Polysaccharide

Answer 1

Hint:
These are also called a polyribosome which is a groups of ribosomes bound to an mRNA molecule like “beads” on a “thread”. This complex structure acts to translate mRNA into polypeptides. And it is a complex structure of mRNA and ribosomes together.

Complete step by step answer:
Peptides are molecules consisting of 2 to 50 amino acid residues covalently linked together by peptide bonds. When two amino acid residues are linked through a peptide bond, then the product is called a dipeptide. Three amino acids can be joined by two peptide bonds to form a tripeptide; similarly, amino acids can be linked to form tetrapeptides, pentapeptides and so forth. When many (generally > 50) amino acid residues are joined, the product is called a polypeptide.
The polymers made up of two to ten monosaccharide units joined together are called oligosaccharides. These are joined by glycosidic linkages. Polysaccharides are polymers with hundreds or thousands of monosaccharides units. Polysaccharides are not sweet in taste hence they are also called non-sugars. Polysomes are aggregated of numerous ribosomes that are in the process of actively translating mRNA into protein.

Option ‘A’ is correct

Note:
Polymer is any of a class of natural or synthetic substances composed of very large molecules, called macromolecules, which are multiples of simpler chemical units called monomers. Many of the materials used in our daily lives are made up of polymers.