Indicate which numbered feature (1 to 5) in the schematic drawing below of the DNA double helix corresponds to each of the following. Your answer would be a five-digit number composed of digits 1 to 5 only, e.g. 52431.

( ) Hydrogen-bonding
( ) Covalent linkage
( ) Phosphate group
( ) Nitrogen-containing base
( ) Deoxyribose sugar

Question

Indicate which numbered feature (1 to 5) in the schematic drawing below of the DNA double helix corresponds to each of the following. Your answer would be a five-digit number composed of digits 1 to 5 only, e.g. 52431.
  
( )	Hydrogen-bonding
( )	Covalent linkage
( )	Phosphate group
( )	Nitrogen-containing base
( )	Deoxyribose sugar

Quizplus · Accepted Answer

In the double-stranded DNA, the sugar-phosphate backbones form two covalently continuous chains, while the nitrogenous bases from one chain are hydrogen-bonded to those of the other chain according to the Watson-Crick model.

Indicate Which Numbered Feature (1 to 5) in the Schematic