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Protein Synthesis

Protein Synthesis
Proteins contain __________ different amino acids, whereas DNA and RNA are composed of __________ different nucleotides

4,20
20,64
3,20
20,4

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Protein Synthesis
Eukaryotic mRNA binding to the ribosomes is facilitated by __________ .

poly A tail
the Shine Dalgarno sequence
tRNA
the 7-methyl guanosine cap

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Protein Synthesis
On the ribosome, mRNA binds

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

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Protein Synthesis
The anticodon of tRNA

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

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

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

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Protein Synthesis
Amino acids are joined together into a protein chain by which of the following?

Transfer RNA
Messenger RNA
Hydrogen bonds
DNA polymerase

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