Bio 250 Microbiology Exam 2024-2025

What does growth refer to in terms of a growth plate ? A. The growth of individual cells B. The growth of the plate C. The growth of a microbial population D. All of these - ANSWER>>The growth of a microbial population What are protective enzymes against toxic reactive oxygen species? A. Peroxide and phosphatase B. Catalase and oxygenase C. Peroxidase and Catalase D. None of the above - ANSWER>>Peroxidase and Catalase Cells that are persister cells have A. Long term survival characteristics B. Increased virulence C. Decreased virulence D. A and B - ANSWER>>A and B What is the purpose of carotenoid pigments A. To aid in photooxidation B. To prevent photooxidation C. To create free radicals D. To cause radiation damage - ANSWER>>To prevent photooxidationBacterial cells in biofilms communicate in a density dependent manner called A. Quantitative Sensing B. Quorum Sensing C. Quintessential Sensing D. None of the above - ANSWER>>Quorum Sensing Reproduction via binary fission leads to what type of growth under optimal conditions: A) linear B) mixed C) exponential D) uptake-limited - ANSWER>>exponential Selective media is different from differential media in that: A. Selective media favors the growth of some microorganisms and inhibits others while differential