Multiple Choice
Which of the following statements correctly distinguishes DNA from RNA?
2
views
7. DNA and Chromosome Structure
DNA Structure
Struggling with Genetics?
Join thousands of students who trust us to help them ace their exams!Watch the first videoMultiple Choice
In the diagram below, the two blue strands represent _____.
A
the hydrogen bonds between base pairs
B
the ribose molecules in RNA
C
the sugar-phosphate backbones of DNA
D
the nitrogenous bases of DNA
Verified step by step guidance1
Identify the components of the DNA double helix structure: DNA consists of nitrogenous bases, sugar molecules (deoxyribose), phosphate groups, and hydrogen bonds connecting the bases.
Understand that the sugar-phosphate backbone forms the structural framework of DNA strands, running along the outside of the helix.
Recognize that the nitrogenous bases pair in the interior of the helix, connected by hydrogen bonds, and are not represented by the blue strands in the diagram.
Recall that ribose molecules are found in RNA, not DNA, so the blue strands cannot represent ribose in this context.
Conclude that the blue strands in the diagram represent the sugar-phosphate backbones of DNA, which provide stability and structure to the molecule.
Related Videos
Related Practice
