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Protein Synthesis

Protein Synthesis
Which of the following has unusual bases?

rRNA
mRNA
tRNA
hnRNA

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Protein Synthesis
Protein synthesis rates in prokaryotes are limited by the rate of mRNA synthesis. If RNA synthesis occurs at the rate of 50 nucleotides/sec, then rate of protein synthesis occurs at

10 amino acids/sec
25 amino acids/sec
50 amino acids/sec
17 amino acids/sec

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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 only
None of these
encoding p-galactosidase and galactose permeases

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

DNA polymerase
Messenger RNA
Hydrogen bonds
Transfer RNA

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Protein Synthesis
Ribosomes select the correct tRNAs

depending on their abundance in the cytosol
with the least abundant anticodons
then bind to the appropriate mRNA
solely on the basis of their anticodons

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Protein Synthesis
Which is required for protein synthesis?

tRNA
rRNA
mRNA
All of these

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