Scelta multipla
In RNA, which sugar is found in the nucleotide backbone?
95
views
7. DNA and Chromosome Structure
RNA
Scelta multipla
In terms of chemical composition and basic structure, which statement best describes a similarity between RNA and DNA?
A
Both use thymine (T) as a standard nitrogenous base.
B
Both are always double-stranded helical molecules under physiological conditions.
C
Both contain deoxyribose as the pentose sugar in their nucleotides.
D
Both are polymers of nucleotides linked by -to- phosphodiester bonds and contain a sugar-phosphate backbone.
Guida verificata passo dopo passo1
Recall the basic chemical components of DNA and RNA: both are nucleic acids composed of nucleotides, which include a sugar, a phosphate group, and a nitrogenous base.
Identify the sugar in each nucleic acid: DNA contains deoxyribose, while RNA contains ribose. This difference affects their chemical properties and structure.
Consider the nitrogenous bases: DNA uses thymine (T), whereas RNA uses uracil (U) instead of thymine.
Examine the strand structure: DNA is typically double-stranded and helical under physiological conditions, while RNA is usually single-stranded.
Focus on the backbone linkage: both DNA and RNA nucleotides are connected by 3'-to-5' phosphodiester bonds forming a sugar-phosphate backbone, which is a fundamental similarity in their chemical structure.
Video correlati
Pratica correlata
