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Protein Synthesis

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

Four
Two
One
Three

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

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

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

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

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

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

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Protein Synthesis
Which of the following amino acid starts all proteins synthesis?

Proline
Methionine
Glycine
Thymine

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Protein Synthesis
On the ribosome, mRNA binds

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

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