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Protein Synthesis

Protein Synthesis
Which of the following is not necessary for protein synthesis to occur, once transcription is completed?

DNA
tRNA
mRNA
Ribosomes

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Protein Synthesis
The ribosomes are composed of

RNA
lipids
both (a) and (b)
proteins

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Protein Synthesis
The anticodon of tRNA

binds to the Shine Dalgarno sequence
binds to an mRNA codon
binds to rRNA
binds to an amino acid

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Protein Synthesis
The lac operon contains the z, y and a structural genes

encoding p-galactosidase, galactose permeases and thio-galactosidase transacetylase respectively
encoding p-galactosidase and galactose permeases
encoding P-galactosidase only
None of these

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Protein Synthesis
The growing polypeptide chain is released from the ribosomes when

the poly A tail is reached
a chain terminating codon is reached
a chain terminating tRNA binds to the ribosome
the 7-methyl guanosine cap is reached

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Protein Synthesis
Which is required for protein synthesis?

All of these
rRNA
mRNA
tRNA

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