Question

The enzyme required for transcription is

• A. Restriction enzyme
• B. DNA polymerase
• C. RNA polymerase
• D. RNase

Answer 1

Answer: (C)

RNA polymerase

Synthesis of RNA using the DNA template strand is referred to as transcription. Restriction enzymes recognize specific sequences, mostly 4-6 bp, in the DNA and cut it into fragments by breaking the phosphodiester linkage between two successive nucleotides of DNA. This makes option A incorrect as transcription does not involve breaking the phosphodiester bonds of DNA molecule. DNA polymerase enzyme adds deoxyribonucleotides to synthesize DNA using the base sequence of parental DNA strand by the process of DNA replication which makes option B incorrect. RNA polymerase enzyme adds ribonucleotides primer strand to synthesize RNA using the base sequence of template DNA strand. Option C is correct. Option D is incorrect as RNase are the group of enzymes that digest or cleave the RNA molecules. Thus, the correct answer is C.