What is a ribosome? On prokaryotic cell? Explain please no copy I read the rules of brainly and I will check
Answers
Prokaryotic cells posses ribosomes, which are, 70S as compared to 80S . Some similar 70S ribosomes occur inside the chloroplasts and the mitchocondria of eukaryotes. The bacterial cell also have ribosomes which are primitive type of cell in which the genetic material is no properly organized.
The bacterium's cytoplasm have ribosomes as their component, they are typically characterized as small membraneless, sub-microscopic ribonucleoprotein entities having an approximated size of 20 nanometer in length and 14 to 15 nanometer in height. Ribosomes are of mainly two types, fixed ribosome and free ribosome. Fixed ribosomes are attached to the plasma membrane, however, free ribosomes occur freely in the cytoplasmic matrix. The ribosomes are generally 70Smin their nature (Here if you are confused what "S" is, it denotes sedimentation coefficient of Svedberg Number). Each ribosome has two subunits, the larger one or 50S and the smaller one or 30S. Ribosomes actively takes part in the process of protein synthesis. Free or matrix ribosomes are taking part in the synthesis of proteins for intracellular use while fixed ribosomes are doing the synthesis of proteins for transport to the outside. Ribosomes generally occur in helical groups called as polyribosomes or sometimes as polysomes. In each of them (polysome) 4 to 8 ribosomes are attached fully to a single strand of messenger RNA or mRNA. It is a proper mechanism to synthesis several copies of the same proteinaceous compound.