DNA and RNA Structure Answers

DNA is composed of repeating structural units called .

is the five-carbon sugar found in DNA.

In the diagram to the right, identify the three components of a nucleotide. Label A

Label B

Label C

Like DNA, RNA contains four nitrogenous bases. Three of them are the same as those found in DNA. The one that is different is called

Use the drop-down menus below to match the scientist(s) to their contribution to the discovery of base pairings. studied the role of RNA in protein synthesis, specifically in the bacteria E. coli. created an accurate model of the structure of DNA. proposed the polynucleic model, stating that DNA and RNA were composed of nucleotides. concluded that, in DNA, adenine levels were equal to thymine levels and cytosine levels were equal to guanine levels.