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DUMET Medical DUMET Medical Solved Paper-2004

  • question_answer
    Ribosome mainly has :

    A)  DNA         

    B)  RNA

    C)  carbohydrate  

    D)  none of these

    Correct Answer: B

    Solution :

    Ribosomes are nonmembranous ribonucleoprotein particles which are necessary for protein synthesis. Ribosomes are of two basic type i.e., 70S and 80S. The 70S type are found in prokaryotes while the 80S type in eukaryotes. The ribosomes found in mitoehondria and chloroplast of eukaryotes are closure to prokaryote.
    Ribosome Type Larger Subunit Smaller subunit
    70S 80S 50S (23S and 5S r-RNA) 60S (25S+ 5S And 5.8S 30S (16Sr-RNA 40S (16-18S
    DNA is a polymer of deoxyribonucleotides and is found in mitoehondria, chloroplast and nucleus.


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