CHAPTER 7: MICROBIOLOGY (TEST BANK)

A bacterial genome is typically A) A single linear piece of DNA. B) Multiple linear pieces of DNA. C) A linear RNA molecule. D) A single circular DNA molecule. E) Multiple circular DNA molecules. - D) a single circular DNA molecule. Which of the following is found at the 5' end of a DNA strand? A) A phosphate group B) A hydrogen bond C) A hydroxyl group D) Histones E) A methyl group - A) a phosphate group The bacterial chromosome is A) Usually found in the cytoplasm. B) Found in a nucleoid. C) Found in a nucleus. D) Both circular and found in a nucleoid. E) Both circular and found in a nucleus. - D) Both circular and found in a nucleoid. Which of the following types of plasmids allows a bacterial cell to kill its competitors? A) Virulence plasmids B) Fertility plasmids C) Bacteriocin plasmids D) Resistance plasmids E) Cryptic plasmids - C) Bacteriocin plasmids Which of the following is found in both archaeal and eukaryotic genomes? A) Chromatin fibers B) Histones C) Heterochromatin D) Euchromatin E) Nuclear envelope - B) Histones Which of the following statements is true of bacterial plasmids? A) They are always found in the nucleoid. B) They can replicate autonomously. C) They carry genes for essential metabolic functions. D) They are small circular DNA molecules. E) They are small circular DNA molecules that can replicate autonomously. - E) They are small circular DNA molecules that can replicate autonomously. The process indicated by the arrow in Figure 7.1 represents A) Lagging strand synthesis. B) Leading strand synthesis. C) Transcription. D) Translation. E) Recombination. - A) Lagging strand synthesis.