Exam 12: Gene Structure Expression, and Mutation

Transcription Diagram -In the transcription diagram, what is the name of item D?

Which site on a ribosome does the release factor bind to?

Which region in a tRNA bonds with mRNA during translation?

Match each type of RNA with its description. -tRNA

Which of the following is included in the lariat structure?

Suppose that a DNA change results in the substitution of one codon for another, but the codon specifies the same amino acid as it did originally. What type of mutation has occurred?

Which molecule consists entirely of protein?

Match each type of RNA with its description. -snRNA

Which type of molecule is a translation elongation factor?

For each item or event, indicate the process it is associated with. -spliceosome

Which sentence best describes the role of the signal recognition particle (SRP)?

Match each term with its definition. -exon

For each item or event, indicate the process it is associated with. -release factor

How is the formation of the peptide bond catalyzed during translation?

Genetic Code Table -Suppose that an mRNA molecule is made complementary to the DNA sequence 3'-CTTACATGGCATCC-5'. In the genetic code table, the incorporation of which amino acid in the polypeptide is directed by the second codon (assuming the start codon is counted as the first codon)?

For each item or event, indicate the process it is associated with. -promoter

Match each term with its definition. -stop codon

For each item or event, indicate the process it is associated with. -peptidyl transferase

Which region of the DNA does RNA polymerase interact with during transcription initiation?

What is a ribosome made of?