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How is a high level of fidelity maintained in attaching the amino acids to the tRNA structure?

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The reaction has very high fidelity in r...

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Proteins are synthesized in the __________________ direction.

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N→ C or am...

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Which of the following E.coli proteins is responsible for translocation of the mRNA as a result of a conformation change due to the hydrolysis of GTP?


A) RRF
B) EF-Tu
C) EF-G
D) Shine-Dalgarno
E) None of the answers is correct.

F) C) and D)
G) A) and B)

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What proteins recognize UAA,UAG,and UGA codons?


A) initiation factors
B) elongation factors
C) termination factors
D) release factors
E) 30s ribosome subunit

F) B) and D)
G) None of the above

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The ribosome is thought to be


A) an example of a catalyst that has survived from the RNA world.
B) unique to eukaryotes.
C) a ribozyme.
D) a protein catalyst.
E) an example of a catalyst that has survived from the RNA world and a ribozyme.

F) A) and E)
G) A) and D)

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What region of a tRNA often contains large amounts of inosine?


A) acceptor arm
B) D arm
C) T Ψ\varPsi C arm
D) anticodon loop
E) extra arm

F) C) and E)
G) A) and E)

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Class ____________ aminoacyl-tRNA synthetases acylate the 2′ hydroxyl group of the terminal adenosine of tRNA.

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In E.coli,the signal sequence that properly aligns the initiation codon in the P site is called the ______________________ sequence.

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