Similarities between RNA polymerase and peptidyl transferase in protein synthesis

Steps:

• Identify RNA polymerase: enzyme that transcribes DNA to mRNA during protein synthesis.
• Identify peptidyl transferase: ribozyme (RNA-based enzyme) in the ribosome that catalyzes peptide bond formation.
• Compare properties: both catalyze key steps in protein synthesis and operate inside cells.
• Evaluate options: check for shared traits like location, composition, and structure.

Why C is correct:

• Both enzymes function within the cell (intracellular), as protein synthesis occurs in the cytoplasm or nucleus.

Why the others are wrong:

• A: Peptidyl transferase is an RNA ribozyme, not a protein.
• B: They differ in composition (protein vs. RNA), so tertiary structures vary.
• D: Not enough information.

Final answer: C