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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

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1.

In the DNA Double Helix, complementary base pairs are held together by :

  N-glycosidic bonds

  peptide bonds

  hydrogen bonds

  ionic bonds

  Half-n-half Clue
 

2.

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

  dispersive

  derivative

  semiconservative

  conservative

  Half-n-half Clue
 

3.

Which base is found in RNA but not DNA ?

  Adenine

  Uracil

  Thymine

  Cytosine

  Half-n-half Clue
 

4.

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

  In its feathers !

  In virtually every cell in its body.

  In the ribosomes.

  In the primary spermatocytes.

  Half-n-half Clue
 

5.

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
 

6.

Each nucleotide in a DNA molecule consists of :

  a phosphate group, a pentose sugar, and a oxygen base.

  a phosphate group,a pentose sugar and a nitrogeneous heterocyclic base.

  a sulfonyl group, a pentose sugar, and a nitrogeneous heterocyclic base.

  a phosphate group, a hexose sugar and a nitrogeneous heterocyclic base.

  Half-n-half Clue
 

7.

The DNA molecule is a polymer. Its monomer units are :

  amino acids

  nucleotides

  nucleosides

  nucleic acids

  Half-n-half Clue
 


 
5 more pages in Molecular Biology


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