Question

What is the function of the ribosome?

Answer 1

Hint: 1) Organelles, such as the ribosome, are small structures in the cytoplasm that perform functions essential for cell homeostasis.
2) They are involved in a variety of processes, including energy generation, protein and secretion formation, toxin elimination, and response to external signals.
3) Organelles may be classified as membranous or nonmembranous.

Complete answer:
The ribosome is a cell organelle that can be located either floating in the cytosol (free ribosomes) or bound to the Rough Endoplasmic Reticulum. Both have the same purpose, which is to assemble polypeptides. Ribosomes do this by a mechanism known as translation, in which mRNA binds to the ribosome, and tRNA molecules containing individual amino acids bind to the mRNA's codons. It keeps inserting amino acids until it reaches a stop codon, at which point the new polypeptide is released and goes off to do its job. The ribosome reads a sequence of nucleotide bases in three-base groups known as codons. The start codon is the first codon read. Each codon after the start codon represents a different amino acid, which is then carried to the ribosome by transfer RNA, abbreviated tRNA. The amino acid-carrying tRNA is bound to the ribosome's A site. In the P site, the amino acid is connected to the amino acid that comes before it. A peptide bond is a bond between two amino acids in a polypeptide chain. After forming the peptide bond, the ribosome moves to the next three nucleotide bases on the mRNA strand and repeats the process until a stop codon is reached. Free ribosomes typically produce polypeptides that are used inside the cell, whereas those on the Rough ER typically produce polypeptides that are excreted and distributed to other cells.
Ribosomes act as adapters, structural molecules, and catalytic molecules.
The below are the primary functions of the ribosome:
1) Synthesis of proteins (in translation)
2) Aids in the binding of the two rRNA ribosome units.

Note:
1) Chloroplasts and mitochondria both have their DNA and ribosomes.
2) Bacteria, mitochondria, and chloroplasts are also about the same number. Bacteria have DNA and ribosomes that are identical to those found in mitochondria and chloroplasts. Based on this and other data, scientists believe that endosymbiotic interactions between host cells and bacteria evolved long ago when individual host cells took in aerobic (oxygen-using) and photosynthetic bacteria but did not kill them.