Question Detail
Question
Which of the following molecules functions as both a base and a catalyst in cells?
Correct Answer
Option A is the correct answer.
Detailed Explanation
Certain RNA molecules, called ribozymes, can act as biological catalysts (like enzymes) and also serve as informational molecules (like mRNA). This dual function is a key piece of evidence for the 'RNA world' hypothesis.
Hint
RNA can have enzymatic activity.