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Ribosomes are essential for protein synthesis, but they are present in mitochondria and plastids, the sites of respiration and photosynthesis. What is the role of ribosomes in these organelles?A. Ribosomes transport ATP formed in respiration and photosynthesis to cytoplasm through ERB. Subunits of some required proteins are synthesised in these organellesC. Ribosomes transport RNA and DNA to cytoplasmD. All of these |
Answer» Correct Answer - B Ribosomes are found inside the chloroplast and mitochondria, besides nucleus. It is mainly, these organelles are semiautonomous, i.e., some of the proteins that are utilised for organelle functioning are synthesised in these organelles as well as in nucleus, e.g. large subunit of RuBisCO is synthesised in chloroplast while small in nucleus. |
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