80S
Encyclopedia
80S are ribosome
Ribosome
A ribosome is a component of cells that assembles the twenty specific amino acid molecules to form the particular protein molecule determined by the nucleotide sequence of an RNA molecule....

s present in eukaryotes. Their small subunit is 40S
40S
40S is the small subunit of eukaryotic ribosomes.It interacts with the internal ribosome entry site of the hepatitis C virus.The following is a list of proteins contained in the 40S ribosome:...

 and the large subunit is 60S
60S
60S is the large ribosomal subunit in eukaryotes. It corresponds to 50S in prokaryotes.It consists of the following:* 5S* 28S* 5.8SThe following is a list of proteins contained within the 60S ribosome:...

. Ribosomes present in eukaryotes differ from those found in prokaryote
Prokaryote
The prokaryotes are a group of organisms that lack a cell nucleus , or any other membrane-bound organelles. The organisms that have a cell nucleus are called eukaryotes. Most prokaryotes are unicellular, but a few such as myxobacteria have multicellular stages in their life cycles...

 in many ways: they are larger, contain larger proteins as well as a larger number of proteins, and have four (instead of three) molecules of RNA
RNA
Ribonucleic acid , or RNA, is one of the three major macromolecules that are essential for all known forms of life....

.
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