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NSWBiologyQuick questions
Module 5: Heredity
Quick questions on Transcription and translation explained: HSC Biology Module 5
4short 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 the three RNAs at a glance?Show answer
Forgetting that A pairs with U in RNA. In DNA, A pairs with T. In RNA, A pairs with U.
What is q1?Show answer
A DNA template strand has the sequence 3'-TACGCATGAATT-5'. Determine (a) the mRNA sequence produced by transcription, and (b) the amino acid sequence produced by translation, given the codon table: AUG = Met, CGU = Arg, ACU = Thr, UAA = stop. [2+2 marks]
What is q2?Show answer
A point mutation changes a single mRNA codon from CGU to UGU. Using the genetic code, predict the type of mutation and the effect on the resulting polypeptide. [3 marks]
What is q3?Show answer
Compare the locations and roles of mRNA, tRNA and rRNA in a eukaryotic cell. (a) State where each is made. (b) State the function of each in protein synthesis.
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