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Translation and Regulation

Translation and Regulation
The final step of gene expression is protein synthesis, which is also known as

translation
none of these
transcription
replication

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Translation and Regulation
Which of the following three codons translate as serine (Ser)?

CAU
CGA
AGU
AUG

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Translation and Regulation
Negative regulation of protein synthesis is accomplished by

allosteric inhibition
the binding of a repressor to the DNA
the binding of RNA polymerase to the promoter
the binding of a repressor to the RNA polymerase

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Translation and Regulation
What is the maximum number of different amino acids in a polypeptide chain coded by the synthetic polyribonucleotides (UCAG)5?

Three
Four
Two
One

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Translation and Regulation
Site in the ribosome from which the tRNA donates amino acids to the growing polypeptide chain is

A site
P site
T site
O site

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

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

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