Feedback for Multiple Choice Quiz 33
- The four incorrect answers are variations on the important features of DNA listed in the correct answer.
- All biological polynucleotides have 3'-->5' phosphodiester linkages.
- Higher counterion concentrations stabilize double stranded DNA (and RNA) by partially neutralizing the large number of negatively charged phosphates in the backbone.
- "Glycosidic bond" is the general term referring to any bond made to the C1' position of the sugar.
- Both separation techniques are based on the molecular seiving principle that also separates proteins on gel filtration columns.
- The absorption properties of DNA are due to absorption of UV light by the nucleotide bases.
- All four are important features of this pyrimidine.
- The different names for the chemically-equivalent grooves in DNA and RNA are useful because they describe the relative dimensions (major & minor) or shape (deep & shallow).
All of the correct answers have a green check mark.
Incorrect answers have the "red-lit" button next to your choice.