Question

Given is the schematic structure of the transcription unit. Select the correct answer regarding A, B, C, and D:

• A. A - Terminator, B - Promoter, C - Template strand, D - Coding strand
• B. A - Promoter, B - Terminator, C - Coding strand, D - Template strand
• C. A - Promoter, B - Terminator, C - Template strand, D - Coding strand
• D. A - Terminator, B - Promoter, C - Coding strand, D - Template strand

Hint:

The template strand is used for mRNA synthesis, while the coding strand has the same sequence as the mRNA (except thymine is replaced by uracil).

Answer 1

The Correct Option is C

Step 1: Understanding the Transcription Unit

A transcription unit consists of:
- Promoter: Initiates transcription.
- Terminator: Marks the end of transcription.
- Template strand: Serves as the template for RNA synthesis.
- Coding strand: Has the same sequence as the RNA (except for uracil replacing thymine).