Multiple Choice
Which sugar is found in RNA?
17
views
1. Introduction to Biochemistry
Nucleic Acids
Struggling with Biochemistry?
Join thousands of students who trust us to help them ace their exams!Watch the first videoMultiple Choice
Which sugar is found in the backbone of RNA molecules?
A
Ribose
B
Fructose
C
Glucose
D
Deoxyribose
Verified step by step guidance1
Understand the structure of RNA molecules: RNA (ribonucleic acid) is a nucleic acid composed of nucleotides, which consist of three components: a phosphate group, a nitrogenous base, and a sugar molecule.
Identify the sugar molecule in RNA: The sugar in RNA is a pentose sugar, meaning it has five carbon atoms. This sugar is crucial for forming the backbone of the RNA molecule.
Compare the options provided: Ribose, Fructose, Glucose, and Deoxyribose. Fructose and Glucose are hexose sugars (six carbon atoms) and are not part of nucleic acids. Deoxyribose is the sugar found in DNA, not RNA.
Focus on Ribose: Ribose is a pentose sugar with the molecular formula C₅H₁₀O₅. It contains a hydroxyl (-OH) group attached to the 2' carbon, which distinguishes it from Deoxyribose (found in DNA, where the 2' carbon has a hydrogen atom instead).
Conclude that Ribose is the correct sugar in the backbone of RNA molecules, as it provides the structural framework for RNA nucleotides.
Related Videos
Related Practice
