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Protein Synthesis

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

Ribosomes
mRNA
DNA
tRNA

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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
None of these
encoding P-galactosidase only
encoding p-galactosidase and galactose permeases

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Protein Synthesis
On the ribosome, mRNA binds

between the subunits
none of these
to the small subunit
to the large subunit

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Protein Synthesis
Which of the following RNAs bind to an amino acid?

mRNA
tRNA
hnRNA
rRNA

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Protein Synthesis
How many bases of nucleic acid determine a single amino acid?

Four
Two
Three
One

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Protein Synthesis
The structure in a bacterium that indicates an active site for protein synthesis is

a cell membrane,
a polysome.
a flagellum.
a chromosome.

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