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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.

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

  aminoacyl-tRNA synthetases

  beta-galactosidases

  phenylalanine hydroxylases

  Ornithine decarboxylases

  Half-n-half Clue
 

2.

Synthesis of proteins can take place quickly by multiple ribosomes being able to attach themselves to one mRNA chain. An mRNA chain with multiple ribosomes is called :

  a peroxisome

  a centrosome

  a lysosome

  a polysome

  Half-n-half Clue
 

3.

The base inosine is usually found in :

  tRNA

  hnRNA

  rRNA

  mRNA

  Half-n-half Clue
 

4.

The movement of peptidyl tRNA from the A site to the P site (of the larger ribosomal subunit) and the movement of mRNA in relation to the ribosome is called :

  RNA processing

  elongation

  translocation

  dislocation

  Half-n-half Clue
 

5.

A sequence of about 5 to 20 bases seperating one stop codon from the next start codon in a polycistronic prokaryotic mRNA molecule is called :

  a transposon

  a Shine Dalgarno sequence

  a spacer

  a poly-A-tail

  Half-n-half Clue
 

6.

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
 

7.

The triplet base sequence in DNA that is translated into a stop codon, whose corresponding tRNA anticodon, is AUU is given by :

  ATT

  GCC

  TAA

  CGG

  Half-n-half Clue
 


 
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