DNA AND RNA STRUCTURES

 

 

DNA

*  DNA is double stranded and forms a "Double Helix"

*  DNA is made up of four Nitrogen Bases:

    Adenine binds to Thymine

    Guinine binds to Cytosine

*   DNA contains the sugar Deoxyribose

*  There is only one type of DNA

 

RNA

*  RNA is single stranded

*  RNA is made up of four Nitrogen Bases

    Adenine binds with Uracil  (RNA does not contain Thymine, it substitutes Uracil)

     Guinine binds with Cytosine

*  RNA contains the sugar RIBOSE

*  There are 3 different types of RNA:

    mRNA - Messenger RNA

      tRNA -  Transfer RNA

      rRNA -  Ribosomal RNA

 

Here's some online Help:

http://www.usask.ca/education/coursework/mcvittiej/bio30unit1/overheads/1.23.htm