Multiple Choice
Which of the following statements is correct regarding RNA?
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7. DNA and Chromosome Structure
RNA
Multiple Choice
Which of the following statements is NOT true of RNA?
A
Some RNA molecules can function as catalysts (ribozymes).
B
RNA is typically single-stranded and can fold into complex secondary structures.
C
RNA contains the base uracil (U) instead of thymine (T).
D
RNA contains deoxyribose as its pentose sugar.
Verified step by step guidance1
Step 1: Understand the basic structure of RNA. RNA is a nucleic acid composed of nucleotides, each containing a ribose sugar, a phosphate group, and a nitrogenous base.
Step 2: Recall that RNA contains the sugar ribose, which has a hydroxyl group (-OH) attached to the 2' carbon, distinguishing it from DNA, which contains deoxyribose (lacking the 2' hydroxyl group).
Step 3: Review the nitrogenous bases in RNA. RNA uses uracil (U) instead of thymine (T), which is found in DNA.
Step 4: Recognize that RNA is typically single-stranded and can fold into complex secondary structures, allowing some RNA molecules to act as catalysts called ribozymes.
Step 5: Identify the false statement by comparing the sugar component: the statement 'RNA contains deoxyribose as its pentose sugar' is incorrect because RNA contains ribose, not deoxyribose.
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