8. Continuing with questions #6 and 7 above, Kreisler is ____ binds to the ___ 3 ____, which is part of the first ____ into an amino acid sequence when ____. Transcribed; Ribosomes; Translation initiation codon; Exon Translated; Ribosomes; Transcription initiation site; Intron Transcribed; RNA polymerase; Transcription initiation site; Exon Translated; Ribosomes; Translation initiation codon; Exon Translated; Ribosomes; Translation termination codon; Exon
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38. Examine the diagram of the translation initiation complex below, and use it to answer questions a-e. Label the following: small ribosomal subunit, large ribosomal subunit, mRNA, tRNA, amino acid, anti-codon, codon. What amino acid would be attached to the tRNA in the above diagram? The sequence of the anti-codon on the tRNA mentioned in (b) would be? The next tRNA will enter the ribosome at what location? What amino acid will it be carrying? What will the anti-codon on the tRNA be? What signals the termination of transcription? Describe the events that occur once the termination signal is reached.
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Chapter 18: Describe the roles of TFIIIA, TFIIIB, and TFIIIC. Describe the structure and function of the TATA box. Chapter 19: Describe the stages of pre-mRNA splicing. How is the intron splicing process related to the transport of mRNA from the nucleus to the cytoplasm? Chapter 22: In both prokaryotic and eukaryotic ribosomes, tRNAs are active in translation. How many tRNAs are active on the ribosome? Explain. The first amino acid added to a polypeptide is methionine. A polypeptide will have internal methionines as well. Why are separate tRNAs for methionine used for translation initiation and translation elongation, and how are those tRNAs distinguished by the ribosome in a prokaryote?
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1. The diagram shows an early stage of elongation in E coli (which will proceed from left to right). The questions that follow relate to the numbered parts of the figure. a. Does the small subunit bind to the mRNA before or after the large subunit? b. Is circled label "2" the 5' end or the 3' end of the mRNA (the ribosome is moving from left to right)? c. Label "3" is the start codon, what are these three bases? Be sure to indicate the 5' and 3' end. d. What amino acid is indicated by label "4" and is attached to the tRNA that is interacting with the start codon? e. What amino acid is label 6 pointing to? f. Label "7" is a codon, and it will be bound by , which are proteins that help release the growing polypeptide chain and dissociate the ribosome from the mRNA. g. The mRNA shown will encode a polypeptide that is amino acids long. What is the string of polypeptides encoded by this mRNA?
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