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NSWBiologyQuick questions
Module 5: Heredity
Quick questions on Transcription and translation explained: HSC Biology Module 5
6short Q&A pairs drawn directly from our worked dot-point answer. For full context and worked exam questions, read the parent dot-point page.
What is transcription?Show answer
The DNA gene is copied into a complementary messenger RNA (mRNA) molecule.
What is translation?Show answer
The mRNA sequence is decoded to build a polypeptide.
What is confusing the strands?Show answer
RNA polymerase reads the template (antisense) strand, not the coding (sense) strand. The mRNA sequence matches the coding strand (with U replacing T).
What is forgetting that A pairs with U in RNA?Show answer
In DNA, A pairs with T. In RNA, A pairs with U.
What is mixing up codons and anticodons?Show answer
The codon is on the mRNA. The anticodon is on the tRNA. They are complementary.
What is skipping the start and stop codons?Show answer
AUG is always the start. UAA, UAG, UGA are always stops. Including them shows you understand initiation and termination.
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