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Read the passage and answer the following question.
Ribosomes are the smallest cell organelles which can be seen only through an electron microscope. They are found in both prokaryotic as well as eukaryotic cells. Ribosomes are dense, round bodies which occur freely in the cytoplasm and may remain attached to the surface of the endoplasmic reticulum. Chemically, ribosomes are made up of ribonucleoprotein (in eukaryotic cells, the constituent of the ribosome is 40% protein and 60% ribosomal RNA). Ribosomes help in the process of protein synthesis. They are, therefore, called as the protein factories of the cell.
Ribosomes are found in
Read the passage and answer the following question.
Ribosomes are the smallest cell organelles which can be seen only through an electron microscope. They are found in both prokaryotic as well as eukaryotic cells. Ribosomes are dense, round bodies which occur freely in the cytoplasm and may remain attached to the surface of the endoplasmic reticulum. Chemically, ribosomes are made up of ribonucleoprotein (in eukaryotic cells, the constituent of the ribosome is 40% protein and 60% ribosomal RNA). Ribosomes help in the process of protein synthesis. They are, therefore, called as the protein factories of the cell.
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Solution
The correct option is C Prokaryotes and eukaryotes
Ribosomes are found in both prokaryotes and eukaryotes. They are complexes of proteins and three (prokaryotes) or four (eukaryotes) rRNA molecules called as subunits. The main function of the ribosome is the site of mRNA translation; once the two subunits are joined by the mRNA from the nucleus, the ribosome translates mRNA into a specific sequence of amino acids. Ribosomes are mainly located in mitochondria and chloroplasts of eukaryotic cells; they are always smaller than cytoplasmic ribosomes. Prokaryotic and eukaryotic ribosomes perform the same functions; however, eukaryotic ribosomes are much larger than prokaryotic ones and most of their proteins are different.
Ribosomes are found in both prokaryotes and eukaryotes. They are complexes of proteins and three (prokaryotes) or four (eukaryotes) rRNA molecules called as subunits. The main function of the ribosome is the site of mRNA translation; once the two subunits are joined by the mRNA from the nucleus, the ribosome translates mRNA into a specific sequence of amino acids. Ribosomes are mainly located in mitochondria and chloroplasts of eukaryotic cells; they are always smaller than cytoplasmic ribosomes. Prokaryotic and eukaryotic ribosomes perform the same functions; however, eukaryotic ribosomes are much larger than prokaryotic ones and most of their proteins are different.
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