Write a note on ribosomes in a prokaryotic cell.
(N/A) $\Rightarrow$ Ribosomes of prokaryotes are associated with the plasma membrane of the cell.
$\Rightarrow$ They are about $15 \ nm$ by $20 \ nm$ in size and are made up of two subunits,$50 \ S$ and $30 \ S$,which when present together form $70 \ S$ prokaryotic ribosomes.
$\Rightarrow$ Several ribosomes may attach to a single $mRNA$ molecule and form a chain called polyribosomes or polysomes.
$\Rightarrow$ Ribosomes are the site of protein synthesis.
$\Rightarrow$ They are about $15 \ nm$ by $20 \ nm$ in size and are made up of two subunits,$50 \ S$ and $30 \ S$,which when present together form $70 \ S$ prokaryotic ribosomes.
$\Rightarrow$ Several ribosomes may attach to a single $mRNA$ molecule and form a chain called polyribosomes or polysomes.
$\Rightarrow$ Ribosomes are the site of protein synthesis.
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Similar Questions
From the statements given below,choose the correct option:
$A.$ The eukaryotic ribosomes are $80S$ and prokaryotic ribosomes are $70S$.
$B.$ Each ribosome has two sub-units.
$C.$ The two sub-units of $80S$ ribosome are $60S$ and $40S$,while those of $70S$ are $50S$ and $30S$.
$D.$ The two sub-units of $80S$ ribosome are $60S$ and $20S$,and those of $70S$ are $50S$ and $20S$.
$E.$ The two sub-units of $80S$ ribosome are $60S$ and $30S$,and those of $70S$ are $50S$ and $30S$.
$A.$ The eukaryotic ribosomes are $80S$ and prokaryotic ribosomes are $70S$.
$B.$ Each ribosome has two sub-units.
$C.$ The two sub-units of $80S$ ribosome are $60S$ and $40S$,while those of $70S$ are $50S$ and $30S$.
$D.$ The two sub-units of $80S$ ribosome are $60S$ and $20S$,and those of $70S$ are $50S$ and $20S$.
$E.$ The two sub-units of $80S$ ribosome are $60S$ and $30S$,and those of $70S$ are $50S$ and $30S$.
MediumNEET 2025
View SolutionRibosomes are the site for which process?
Easy
View SolutionWhich of the following cell organelles is non-membrane bound and found in both prokaryotes and eukaryotes?
Easy
View Solution$DNA$ is not present in:
MediumNEET 2015
View Solution$80S$ ribosomes $= .............$
Medium
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