Exam 17: Gene Expression: From Gene to Protein

Use this model of a eukaryotic transcript to answer the following question. E = exon and I = intron 5′-UTR E₁ I₁ E₂ I₂ E₃ I₃ E₄ UTR-3′ Which components of the previous molecule will also be found in mRNA in the cytosol?

Which of the following statements is true about protein synthesis in prokaryotes?

Which of the following molecules are required for the process of translation?

Which of the following molecular structures contain codons?

How does the primary transcript in the nucleus of a eukaryotic cell compare to the functional mRNA?

In an experimental situation, a student researcher inserts an mRNA molecule into a eukaryotic cell after she has removed its 5′ cap and poly-A tail. Which of the following processes would you expect her to find to have occurred?

Which component is not directly involved in translation?

Which of the following mutations would be most likely to have a harmful effect on an organism?

Which of the following is not true of a codon?

The following question refers to this table of codons. What amino acid sequence will be generated, based on the following mRNA codon sequence? 5′-AUG-UCU-UCG-UUA-UCC-UUG-3′

Accuracy in the translation of mRNA into the primary structure of a polypeptide depends on specificity in the ________.

Which of the following processes correctly describes alternative RNA splicing?

Use the figure to answer the question. Refer to the metabolic pathway illustrated. If A, B, and C are all required for growth, a strain that is mutant for the gene-encoding enzyme A would be able to grow on medium supplemented with which of the following nutrient(s)?

In bacteria, there are 61 mRNA codons that specify an amino acid, but only 45 tRNAs. Which of the following statements explains this fact?

How might a single base substitution in the sequence of a gene affect the amino acid sequence of a protein encoded by the gene?

The anticodon of a particular tRNA molecule is

How does the primary transcript in the nucleus of a prokaryotic cell compare to the functional mRNA?

Which of the following statements best describes the termination of transcription in prokaryotes?

Once a peptide bond has been formed between the amino acid attached to the tRNA in the P site and the amino acid associated with the tRNA in the A site, what process occurs next?

In the structural organization of many eukaryotic genes, individual exons may be related to which of the following?