Multiple Choice
The genetic material of HIV consists of _____.
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7. DNA and Chromosome Structure
DNA as the Genetic Material
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Join thousands of students who trust us to help them ace their exams!Watch the first videoMultiple Choice
Which of the following is a characteristic of DNA but not of RNA?
A
Usually single-stranded
B
Contains the nitrogenous base thymine
C
Can function as a catalyst (ribozyme)
D
Contains the sugar ribose
Verified step by step guidance1
Identify the key structural differences between DNA and RNA. DNA and RNA are both nucleic acids but differ in their sugar components, nitrogenous bases, and strand structure.
Recall that DNA contains the sugar deoxyribose, while RNA contains ribose. This difference affects their chemical stability and function.
Consider the nitrogenous bases: DNA contains adenine, guanine, cytosine, and thymine, whereas RNA contains adenine, guanine, cytosine, and uracil instead of thymine.
Note the strand structure: DNA is usually double-stranded forming a double helix, while RNA is typically single-stranded.
Understand functional differences: RNA can act as a catalyst (ribozyme), but DNA generally does not have catalytic activity.
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