OpenStax Microbiology Test bank- Chapter 9: Microbial Growth

OpenStax Microbiology Test bank- Chapter 9: Microbial Growth Biology 206 * = Correct answer Multiple Choice 1. Bacteria most commonly reproduce using which of the following methods? A. binary fission* B. budding C. meiosis D. mitosis Difficulty: Easy ASM Standard: N/A 2. Which structure separates new daughter cells in binary fission? A. the crescent B. the division septum* C. the FtsZ D. the spindle apparatus Difficulty: Easy ASM Standard: N/A 3. Which of the following is another term for generation time? A. doubling time* B. growth rate C. mitotic index D. replication index Difficulty: Easy ASM Standard: N/A 4. Which of the following best describes culture density? A. another term for a batch culture B. the number of cells per unit volume* C. the reproducible pattern of growth D. the total number of cells Difficulty: Easy ASM Standard: 36 5. Which of the following is the correct order of phases of growth in the growth curve of a batch culture? A. death/decline phase ⟶ lag phase ⟶ log phase ⟶ stationary phase B. lag phase ⟶ log phase ⟶ stationary phase ⟶ death/decline phase * C. log phase ⟶ lag phase ⟶ stationary phase ⟶ death/decline phase D. stationary phase ⟶ log phase ⟶ lag phase ⟶ death/decline phase Difficulty: Easy ASM Standard: 36 6. Which of the following is not a common way bacteria divide? A. binary fission B. budding C. fragmentation D. sporulation* Difficulty: Moderate ASM Standard: N/A 7. Which of the following is the term for free-living bacteria? A. biofilms B. pathogenic C. planktonic* D. sessile Difficulty: Easy ASM Standard: 21 8. Which of the following is not a reactive oxygen species? A. atmospheric oxygen* B. peroxides C. singlet oxygen D. superoxide Difficulty: Easy ASM Standard: 14 9. Which of the following best describes FtsZ? A. a cytoskeletal protein in eukaryotic cells B. the protein that assembles the Z ring, which forms a divisome before division by binary fission* C. the protein that forms within the central structure of the new cell wall and septum that separates the daughter cells during binary fission D. the protein that gives structure to spirochetes, contributing to their unusual shape and motility Difficulty: Moderate ASM Standard: N/A 10. Which microbial pathogen has an unusually long doubling time? A. Bacillus subtilis B. Escherichia coli C. Mycobacterium leprae* D. Salmonella typhimurium Difficulty: Moderate ASM Standard: