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Translation and Regulation

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

A site
O site
P site
T site

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Translation and Regulation
Which of the following defines an open reading frame (ORF)?

A plasmid vector used in genome sequencing
A possible gene predicted by DNA sequencing
The sequence of a complete genome
A sequence of genome in bacteriophage

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Translation and Regulation
What is the direct cause of cell death by diphtheria toxin?

Inactivation of a translational elongation factor
Formation of an ion channel in the cell membrane
None of these
Induction of apoptosis

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Translation and Regulation
During amino acid activation a(n)

amino acid is bound to mRNA
amino acid is bound to tRNA
methyl group is attached to rRNA
methyl group is attached to an amino acid

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

none of these
transcription
replication
translation

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Translation and Regulation
What are the Svedberg values for the subunits of the 70S ribosomes of E. colli?

40S and 20S
40S and 30S
50S and 20S
50S and 30S

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