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Structure and chemical composition of DNA


This quiz is based on the physical structure and chemical composition of DNA. It deals with basic concepts related to DNA chemistry and DNA methods.
 

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Multiple choice

Your Performance  

1.

The single stranded molecule that is transcribed from a DNA template (i.e a photocopy of a specific section of the DNA molecule) and is subsequently used to manufacture proteins is :

  tRNA

  rRNA

  mRNA

  snRNA

  Half-n-half Clue
 

2.

The number of hydrogen bonds that hold the Adenine - Thymine base pair together is :

  2

  3

  5

  4

  Half-n-half Clue
 

3.

Because one original strand of the double stranded DNA helix is found in each daughter cell (after cell division), the DNA replication process is :

  derivative

  conservative

  semiconservative

  dispersive

  Half-n-half Clue
 

4.

Where would you expect to find genetic information describing the characteristics of a Dodo ?

  In the ribosomes.

  In its feathers !

  In the primary spermatocytes.

  In virtually every cell in its body.

  Half-n-half Clue
 

5.

The total length of a DNA molecule in the human genome when fully outstretched is approximately :

  1.8 millimeters.

  Varies from person to person.

  1.8 centimeters.

  1.8 meters.

  Half-n-half Clue
 

6.

The technique Rosalind Franklin used to determine the structure of DNA was :

  centrifuge analysis

  X-Ray crystallography

  bacteriophages

  None of the above

  Half-n-half Clue
 

7.

How does the sequence of a strand of DNA correspond to the amino acid sequence of a protein ? This concept is explained by the central dogma of molecular biology which states that :

  DNA is replicated and sections of the replica are used to make protein.

  DNA is used to make RNA which is used to make protein.

  protein is manufactured directly from DNA without any intermediate.

  None of the above.

  Half-n-half Clue
 


 
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