Translation and Regulation
What is the action of tetracycline in prokaryotes?

It blocks translocation reaction on ribosomes
Not known with certainity
It blocks the binding of amino-acyl tRNA to the A site of ribosomes
It blocks peptidyl transferase reaction on ribosomes

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Translation and Regulation
The role of molecular chaperones is to

degrade newly synthesized polypeptides that contain inaccurate sequences
facilitate binding of ribosomes to mRNA
facilitate binding of RNA polymerase to DNA
aid a newly synthesized polypeptide in folding to its proper shape

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