Ribosomes are minute structure associated with protein
synthesis in the cell. These are found
in all cells, in mitochondria, chloroplast and nucleus of the cell.They are composed
of RNA and proteins and not surrounded by any membrane. On the basis of
“sedimentation coefficient”.
Ribosomes are of two types-
70S ribosome –These are found in mitochondria
,chloroplast and prokaryotic cells like bacterial cell. It is composed of two
units ,larger unit is 50S and smaller unit is 30 S.
80S ribosome-These are found in eukaryotic cells. It’s larger unit is 60S and smaller unit is
40S.
 |
| Ribosomes |
Mg+ ion is required for union of two
subunits of ribosomes.
Function- Ribosomes involves in protein synthesis.
