Multiple Choice
Which component is found in RNA but not in DNA?
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7. DNA and Chromosome Structure
RNA
Multiple Choice
Each of the following is a type of RNA except:
A
rRNA (ribosomal RNA)
B
dRNA (deoxyribonucleic acid)
C
mRNA (messenger RNA)
D
tRNA (transfer RNA)
Verified step by step guidance1
Step 1: Understand the types of RNA mentioned in the problem. rRNA (ribosomal RNA), mRNA (messenger RNA), and tRNA (transfer RNA) are all well-known types of RNA involved in protein synthesis and other cellular functions.
Step 2: Recall the basic difference between RNA and DNA. RNA (ribonucleic acid) contains ribose sugar and is usually single-stranded, while DNA (deoxyribonucleic acid) contains deoxyribose sugar and is double-stranded.
Step 3: Identify the term 'dRNA' in the options. Notice that 'dRNA' stands for deoxyribonucleic acid, which is actually DNA, not RNA.
Step 4: Conclude that since dRNA is not a type of RNA but rather DNA, it is the correct answer to the question asking which is NOT a type of RNA.
Step 5: Summarize that the key to solving this problem is knowing the fundamental difference between RNA and DNA and recognizing the correct abbreviations and their meanings.
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