Question

A complex of ribosomes attached to a single strand of RNA is known as
A. Polysome
B. Polymer
C. Polypeptide
D. Okazaki fragment

Answer 1

This looks like beads on threads. It is a large cluster of 10 to 100 ribosomes that actively translate mRNA instructions into polypeptides.

Complete Answer:
- Ribonucleic acid (RNA) is a polymeric molecule that is important for the decoding and coding, expression of genes, and regulation. Nucleic acids are RNA and DNA. Nucleic acids form one of the four main macromolecules necessary for any known life type along with proteins, carbohydrates, and lipids.
- Certain RNA molecules are involved in cells through catalyzes of biological reactions, genetic expression regulation and sensing and transmitting cellular signal responses. Protein synthesis is a universal mechanism in which RNA molecules guide protein synthesis to ribosomes. It is one of the active processes.
- A polysome is a collection of ribosomes attached to an mRNA molecule. It contains an mRNA molecule complex and two or more ribosomes that are used to transfer mRNA instructions to polypeptides.
- A polymer consists of very large molecules, called macromolecules, composed of many repeated subunits. Both synthetic and natural polymers play important and pervasive roles in daily life because of their wide range of properties.
- Peptides, which are bound by peptide bonds, are small strands between two and fifty amino acids. Dipeptides and oligopeptides, tetrapeptides and tripeptides are classified as chains of less than ten to fifteen amino acids.
- Okazaki fragments are small sequences of DNA nucleotides that are discontinuously and eventually synthesised with a DNA ligase enzyme in order to establish the recessive strand during DNA replication.

Thus, the correct answer is option A. i.e., Polysome.

Note: The synthesis of protein is a universal mechanism in which RNA molecules guide protein synthesis to ribosomes. It is one of the active processes. Certain RNA molecules are involved in cells through catalyzes of biological reactions, genetic expression regulation and sensing and transmitting cellular signal responses.