Scelta multipla
Which of the following RNA sequences would base pair with the DNA strand: AATAG?
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7. DNA and Chromosome Structure
RNA
Scelta multipla
If DNA is described as a double helix, how should mRNA be described?
A
Single-stranded
B
Circular duplex
C
Triple helix
D
Double helix
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Recall the structure of DNA: it is described as a double helix because it consists of two complementary strands twisted around each other.
Understand that mRNA (messenger RNA) is synthesized from one strand of DNA during transcription and serves as a template for protein synthesis.
Recognize that unlike DNA, mRNA is typically composed of a single strand, not two strands twisted together.
Consider the options given: 'Single-stranded', 'Circular duplex', 'Triple helix', and 'Double helix'.
Conclude that since mRNA is single-stranded and does not form a double helix like DNA, the correct description is 'Single-stranded'.
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