BIO 310 Exam Questions with Verified Answers Latest Update 2024 (Already Passed)

BIO 310 Exam Questions with Verified Answers Latest Update 2024 (Already Passed) Organisms that do not require oxygen for growth but grow better in its presence are called A. facultative anaerobes. B. microaerophiles. C. aerotolerant. D. anoxygenic. - Answers A. facultative anaerobes. Organisms that are not drastically affected by increased pressure are called A. barotolerant. B. osmotolerant. C. barophilic. D. osmophilic. - Answers A. barotolerant. Organisms that grow near deep-sea volcanic vents are likely to be A. alkylophilic. B. acidophilic. C. barophilic or barotolerant. D. picrophilic. - Answers C. barophilic or barotolerant. How is budding of bacteria to produce daughter cells different from binary fission? A. The chromosome does not need to be replicated. B. The cytoplasmic division is unequal. C. The bud doesn't receive any DNA. D. A septum must form during budding. - Answers B. The cytoplasmic division is unequal. A microbiologist is testing the drinking water for a municipality. What would be the best method for testing the purified water? A. Viable plate count B. Measurement of microbial mass C. Direct microscopic count D. Membrane filtration - Answers D. Membrane filtration True or False: Cells can move both toward a gradient and away from a gradient. - Answers True Which structure is involved in the genetic exchange (conjugation) between cells? A. capsule B. fimbria C. pilus D. porin - Answers C. pilus Which is the ONLY group of microorganisms that contain lipopolysaccharides (LPS)? a) Archaea b) Bacteria c) gram-positive bacteria d) gram-negative bacteria - Answers d) gram-negative bacteria Which type of protein is excreted and functions outside the cell? A. ectoenzyme B. endoenzyme C. enteroenzyme D. exoenzyme - Answers D. exoenzyme Archaeal membranes are distinguished from Bacterial and Eukaryotic membranes by the presence of.. A. glycerol molecules. B. ether-linked lipids. C. 20-carbon side chains. D. hydrophobic regions. - Answers B. ether-linked lipids. Which of the following is NOT a common morphology of bacteria? A. bacillus B. coccus C. spirillum D. triangulum - Answers D. triangulum What does the FIRST of Koch's postulates state? A. The disease-causing organism must always be present in animals suffering from the disease but not in healthy animals. B. The isolated organism must cause the disease when inoculated into healthy, susceptible animals. C. The organism must be cultivated in a pure culture away from the animal body. D. The organism must be isolated from the newly infected animals and cultured again in the laboratory, after which it should be seen to be the same as the original organism. - Answers A. The disease-causing organism must always be present in animals suffering from the disease but not in healthy animals. Which taxonomic group of microorganisms is primarily responsible for the oxygenation of Earth? A. anaerobic bacteria B. cyanobacteria C. filamentous algae D. purple phototrophic bacteria - Answers B. cyanobacteria In positive control regulation, the activator protein binds to the ________ site to induce transcription. A. activator-binding B. operator C. promoter D. repressor - Answers A. activator-binding What are the main units that control endospore development? A. allosteric proteins B. antisense RNAs