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Multiple Choice
Which statement is true about the DNA molecule during transcription?
A
Both strands of the DNA molecule are used simultaneously for RNA synthesis.
B
Only one strand of the DNA molecule is used as a template for RNA synthesis.
C
The entire DNA molecule is transcribed into RNA.
D
The DNA molecule is completely unwound and separated during transcription.
Verified step by step guidance
1
Understand the process of transcription: Transcription is the process by which a single strand of DNA is used as a template to synthesize RNA. This occurs in the nucleus of eukaryotic cells.
Identify the role of DNA strands: In transcription, only one of the two DNA strands is used as a template. This strand is called the 'template strand' or 'non-coding strand'. The other strand, known as the 'coding strand', is not used for RNA synthesis.
Clarify the extent of transcription: Not the entire DNA molecule is transcribed. Only specific segments of DNA, known as genes, are transcribed into RNA.
Examine the state of the DNA molecule: During transcription, the DNA molecule is partially unwound to expose the template strand, but it is not completely unwound or separated.
Conclude with the correct statement: Based on the understanding of transcription, the true statement is that only one strand of the DNA molecule is used as a template for RNA synthesis.