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Protein Synthesis

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

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

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

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

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

rRNA
mRNA
hnRNA
tRNA

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Protein Synthesis
The peptidyl transferase reaction occurs

between the subunit
on the small subunit
none of these
on the large subunit

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Protein Synthesis
The anticodon of tRNA

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

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

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

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