In this example question, it asks which of the following statements about primary nucleic acid structure is incorrect?
- The structure and function of a nucleic acid is based on the sequence of the connected nucleotides. That there is true.
- The sequence of nitrogenous bases is read from the 5 prime to the 3 prime end. This is directionality, so this statement is also true.
- Phosphodiester bond represents a bond between the phosphate group and the sugar. That is also true.
- So here, the last one, the difference between Nucleic Acids is a result of the difference of the sugar attached to the backbone. Remember, the diversity or differences between our nucleic acids are really based on the differences in their nitrogenous bases, not the backbone. So this statement, (d), is the statement that is incorrect out of all the options given.