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Nucleotides, the building blocks of DNA and RNA, are composed of a sugar (ribose), a base (adenosine, guanosine, cytosine, thymidine or uracil), and a phosphate group. It is important to understand how individual atoms are incorporated into these biological macromolecules.

Using the image below of the main atoms found in biological macromolecules, fill in the spaces in the following prompt.

Mary-Pat Stein. Created for Albert.io. Copyright 2016. All rights reserved.

RNA and DNA are composed of sugars, phosphates, and bases. Sugars are primarily composed of carbon, hydrogen, and
Select Option carbonhydrogennitrogenoxygen
. Of these three atoms, the atom that is capable of forming two covalent bonds is shown in panel
Select Option ABCDEF
in the image provided. The bases found in nucleotides contain primarily carbon, hydrogen, and
Select Option carbonhydrogennitrogenoxygen
. Of these three atoms, the atom that requires three electrons to fill its outer electron shells is shown in panel
Select Option ABCDEF
in the image provided.
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