Ribosomes consist of two subunits, each containing rRNA. An analysis of all the 70S ribosomes from a single cell of the bacterium, Escherichia coli, showed that there were:
• 38000 rRNA molecules
• 2 main types of rRNA molecule
• 19000 copies of each type of rRNA molecule
How many 70S ribosomes were there in the E. coli cell?
1 )
9500
19000
3 )
38000
4 )
76000
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