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Protein Synthesis

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

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

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

Glycine
Thymine
Methionine
Proline

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

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Protein Synthesis
Degenerated codon differs mostly in

the identities of their second base
both (b) and (c)
the wobble position
the identities of their third base

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Protein Synthesis
Which of the following has unusual bases?

tRNA
mRNA
hnRNA
rRNA

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Protein Synthesis
Ribosomes select the correct tRNAs

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

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