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

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

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Translation and Regulation
The development of global regulatory systems in prokaryotes

determines the exact location of the cell on the globe
regulates many genes under varying environmental conditions
determines the exact location of the replication site
aids in DNA replication

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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
aid a newly synthesized polypeptide in folding to its proper shape
facilitate binding of RNA polymerase to DNA

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