Multiple Choice
Which of the following best describes what happens during transcription in a eukaryotic cell?
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15. Gene Expression
Introduction to Transcription
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Place the following events of transcription in the correct order:1. RNA polymerase binds to the promoter2. RNA polymerase synthesizes the RNA strand3. RNA polymerase reaches the terminator and releases the RNA4. DNA strands unwindWhich of the following sequences correctly represents the order of these events?
A
1 → 4 → 2 → 3
B
1 → 2 → 4 → 3
C
4 → 1 → 2 → 3
D
4 → 2 → 1 → 3
Verified step by step guidance1
Step 1: Understand the process of transcription, which is the synthesis of RNA from a DNA template. It involves initiation, elongation, and termination phases.
Step 2: Begin with the initiation phase. RNA polymerase binds to the promoter region of the DNA, which signals the start of transcription. This is the first event in the sequence.
Step 3: Next, the DNA strands unwind to expose the template strand. This unwinding is necessary for RNA polymerase to access the DNA sequence and synthesize RNA.
Step 4: During the elongation phase, RNA polymerase synthesizes the RNA strand by adding complementary RNA nucleotides to the DNA template strand.
Step 5: Finally, RNA polymerase reaches the terminator sequence, signaling the end of transcription. The RNA strand is released, and the process concludes.
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