Multiple Choice
In RNA, what is the name of the pentose sugar found in the nucleotide backbone?
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7. DNA and Chromosome Structure
RNA
Multiple Choice
Which of the following is NOT found in RNA?
A
Uracil
B
Thymine
C
Ribose
D
Phosphate group
Verified step by step guidance1
Step 1: Understand the basic components of RNA. RNA is a nucleic acid composed of nucleotides, each containing a sugar, a phosphate group, and a nitrogenous base.
Step 2: Identify the sugar in RNA. RNA contains ribose sugar, which has a hydroxyl group (-OH) attached to the 2' carbon, distinguishing it from DNA's deoxyribose.
Step 3: Recognize the nitrogenous bases in RNA. RNA contains adenine (A), guanine (G), cytosine (C), and uracil (U). Uracil replaces thymine, which is found in DNA.
Step 4: Recall that thymine is a nitrogenous base found only in DNA, not RNA. Therefore, thymine is NOT found in RNA.
Step 5: Confirm that phosphate groups are present in both DNA and RNA as part of the nucleotide backbone.
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