1.

Many ribosomes may associate with a single mRNA to form multiple copies of a polypeptide simultaneously.Such strings of ribosomes are termed as(1) Polysome(2) Polyhedral bodies(3) Plastidome(4) Nucleosome

Answer»

Correct option (1) Polysome

Explanation

Polysome is a string of ribosomes associated with a single mRNA. polysome helps to produce a number of copies of the same polypeptide. Nucleosome is the unit of eukaryotic DNA that consists of a DNA segment wrapped around a core of eight histone proteins. Nucleosome chain gives a 'beads on string'appearance under electron microscope. plastidome refer to all the plastids of a cell which work as a functional unit.

Polyhedral bodies or carboxysomes are present in several groups of autotrophic bacteria that assimilate inorganic carbon via Calvin cycle, e.g. Cyanobacteria.



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