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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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1.

tRNA molecules are linked to their respective amino acids by enzymes called :

  aminoacyl-tRNA synthetases

  Ornithine decarboxylases

  phenylalanine hydroxylases

  beta-galactosidases

  Half-n-half Clue
 

2.

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 Monkey-Man Hypothesis

  the Levene's Hypothesis

  Sutton-Boveri Hypothesis

  the Wobble Hypothesis

  Half-n-half Clue
 

3.

Which of the following statements is correct ?

  Methionine is found at the N-terminus of nearly all newly synthesised eukaryotic proteins.

  Each mRNA molecule is usually translated into, hundreds of copies of a single polypeptide chain.

  In prokaryotes, both transcription and translation take place in the same part of the nucleus.

  All of the above.

  Half-n-half Clue
 

4.

The base inosine is usually found in :

  mRNA

  hnRNA

  tRNA

  rRNA

  Half-n-half Clue
 

5.

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

  methionine

  lysine

  alanine

  serine

  Half-n-half Clue
 

6.

Which of the following is not a stop codon ?

  UAG

  UGA

  GUA

  UAA

  Half-n-half Clue
 

7.

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
 


 
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