Question

Which enzyme is responsible for the synthesis of RNA from a DNA template?

• A. DNA polymerase
• B. RNA polymerase
• C. Ligase
• D. Helicase

Hint:

Transcription → RNA polymerase → DNA → RNA.

Answer 1

The Correct Option is B

Concept: The process of synthesizing RNA from a DNA template is known as transcription. This is a fundamental step in gene expression.
Step 1: Understanding transcription.
During transcription, genetic information stored in DNA is copied into messenger RNA (mRNA).
Step 2: Role of RNA polymerase.
RNA polymerase is the enzyme that binds to DNA and catalyzes the formation of RNA by adding ribonucleotides complementary to the DNA template strand.
Step 3: Functions of other enzymes.

• DNA polymerase: Synthesizes DNA during replication
• Ligase: Joins DNA fragments
• Helicase: Unwinds DNA strands

Step 4: Conclusion.
Thus, RNA polymerase is responsible for RNA synthesis from a DNA template.