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Translation


This quiz is based on the process of translating mRNA (produced in the nucleus) into protein.

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Multiple choice

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1.

If the mammalian genetic code were a four letter code, then it would have the potential to encode...

  256 amino acids

  128 amino acids

  64 amino acids

  216 amino acids

  Half-n-half Clue
 

2.

The difference in the products translated from a tricistronic mRNA molecule by the ribosomes of prokaryotes and eukaryotes is that :

  the prokaryotic ribosome translates only one cistron while the eukaryotic ribosome translates all cistrons.

  the eukaryotic ribosome translates only one cistron while the prokaryotic ribosome translates all cistrons.

  the eukaryotic ribosome will produce one polyprotein instead of three smaller proteins.

  None of the above.

  Half-n-half Clue
 

3.

Which of the following pairs of codons encode the same protein ?

  AUG and AUC

  UAG and UAC

  GUA and GUG

  UAA and UAC

  Half-n-half Clue
 

4.

The base inosine is usually found in :

  hnRNA

  tRNA

  mRNA

  rRNA

  Half-n-half Clue
 

5.

Prokaryotes use 70S ribosomes which consist of :

  a (small) 40S and a (large) 60S subunit

  a (small) 30S and a (large) 50S subunit

  a (small) 10S and a (large) 60S subunit

  a (small) 40S and a (large) 30S subunit

  Half-n-half Clue
 

6.

Some tRNAs can recognize more than one codon because there is a relaxation of the complementation rule of base pairing between the anticodon and codon in the third position (of the codon sequence). This relaxation is called :

  the Levene's Hypothesis

  the Wobble Hypothesis

  the Monkey-Man Hypothesis

  Sutton-Boveri Hypothesis

  Half-n-half Clue
 

7.

Every polypeptide chain formed in translation starts with the amino acid :

  lysine

  methionine

  serine

  alanine

  Half-n-half Clue
 


 
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