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Multiple Choice
Which of the following structures is not a type of RNA?
A
mRNA
B
DNA
C
tRNA
D
rRNA
Verified step by step guidance
1
Identify the types of RNA listed in the problem: mRNA, tRNA, and rRNA.
Understand the role of each type of RNA: mRNA (messenger RNA) carries genetic information from DNA to the ribosome, tRNA (transfer RNA) helps decode mRNA into a protein, and rRNA (ribosomal RNA) is a component of ribosomes.
Recognize that DNA (deoxyribonucleic acid) is not a type of RNA. It is the molecule that stores genetic information in cells.
Compare the list of options to determine which one does not belong to the category of RNA.
Conclude that DNA is not a type of RNA, as it is a different nucleic acid involved in genetic information storage, not protein synthesis.