A: Peptidyl transfer site is contributed by t | vedclass

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(C) The Assertion is correct: The peptidyl transferase site is located on the $50S$ (larger) subunit of the $70S$ ribosome in prokaryotes.The Reason i

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Assertion is correct,but Reason is incorrect.

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(C) The Assertion is correct: The peptidyl transferase site is located on the $50S$ (larger) subunit of the $70S$ ribosome in prokaryotes.The Reason is incorrect: The enzyme peptidyl transferase is a ribozyme. In prokaryotes,it is primarily composed of $23S$ rRNA,which is part of the $50S$ subunit. The $16S$ rRNA is part of the $30S$ (smaller) subunit and is involved in binding the mRNA and the initiation complex,not in the peptidyl transferase activity. Therefore,the statement that it is contributed by both $23S$ and $16S$ is false.

$A$: Peptidyl transfer site is contributed by the larger subunit of the ribosome.
$R$: The enzyme peptidyl transferase is contributed by both $23S$ and $16S$ ribosomal subunits.

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$A$: Peptidyl transfer site is contributed by the larger subunit of the ribosome.$R$: The enzyme peptidyl transferase is contributed by both $23S$ and $16S$ ribosomal subunits.