Exam 17: Gene Expression: From Gene to Protein

Use the following information to answer the question. A part of an mRNA molecule with the following sequence is being read by a ribosome: 5′-CCG-ACG-3′ (mRNA). The following charged transfer RNA molecules (with their anticodons shown in the 3′ to 5′ direction) are available. Two of them can correctly match the mRNA so that a dipeptide can form. Which of the following anticodons in the first tRNA to bind will complement this mRNA?

Which of the following processes correctly describes alternative RNA splicing?

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

According to the central dogma, what is the intermediate molecule involved in the flow of information in a cell that should go in the blank? DNA → ________ → Proteins

Post-translational modifications of proteins may include which of the following processes?

The anticodon of a particular tRNA molecule is

Which of the following statements best describes the significance of the TATA box in the promoters of eukaryotes?

What is the function of the release factor during translation in eukaryotes?

Which of the following statements correctly describes a ribozyme?

Codons are three-base sequences in mRNA that specify the addition of a single amino acid to the growing protein chain during translation. How do eukaryotic codons and prokaryotic codons compare?

Which of the following statements is the most current description of a gene?

The most commonly occurring mutation in people with cystic fibrosis is a deletion of a single codon. What is the result of this type of mutation?

Use the figure to answer the question. The figure represents tRNA that recognizes and binds a particular amino acid (in this instance, phenylalanine). Which codon on the mRNA strand codes for this amino acid?

Which of the following types of mutation, resulting in an error in the mRNA just after the AUG start of translation, is likely to have the most serious effect on the polypeptide product?

Transcription in eukaryotes requires which of the following molecules in addition to RNA polymerase?

Which component is not directly involved in translation?

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

Which of the following statements correctly describes the effect a nonsense mutation would have on a gene?

In eukaryotic cells, transcription cannot begin until

Using Figure 17.6, identify a 5′ → 3′ sequence of nucleotides in the DNA template strand for an mRNA coding for the polypeptide sequence Phe-Pro-Lys.