Exam 17: Gene Expression: From Gene to Protein

Use the figure to answer the question. The tRNA shown in the figure has its 3′ end projecting beyond its 5′ end. Which of the following processes will occur at this 3′ end?

Which of the following statements supports the one gene-one enzyme hypothesis?

The following question refers to this table of codons. Which of the following sequences of nucleotides are possible in the template strand of DNA that would code for the polypeptide sequence Phe-Leu-Ile-Val?

Which one of the following structures, if missing, would usually prevent translation from starting?

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

An original section of DNA has the base sequence AGCGTTACCGT. A mutation in this DNA strand results in the base sequence AGGCGTTACCGT. What type of mutation does this change represent?

A single base substitution mutation is likely to have a less deleterious effect when the base change exhibits which of the following results?

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

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 dipeptides will form from this mRNA?

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

In eukaryotes, there are several different types of RNA polymerase. Which type is involved in transcription of mRNA for a globin protein?

A particular triplet of bases in the template strand of DNA is 5′-AGT-3′. What would be the corresponding codon for the mRNA that is transcribed?

The genetic code is essentially the same for all organisms. From this, one can logically assume which of the following statements to be true?

Which of the following properties is associated with a protein that will be secreted from a eukaryotic cell?

The genetic code is redundant. What is meant by this statement?

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)?

During the elongation phase of translation, which site in the ribosome represents the location where a codon is being read?

Which of the following processes occurs during transcription?

Which of the following processes is the first event to take place in translation in eukaryotes?

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