Midterm Exam - BIOS242 / BIOS 242 (Latest 2022 / 2023) Fundamentals of Microbiology with Lab - Chamberlain

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Which of the following is true? A. Metabolism only involves breaking down larger molecules. - ✔✔Amphibolic rxns can proceed toward anabolism or catabolism. Which of the following is associated... with the greatest risks to human health? - ✔✔Ethylene oxide. The presence of mycolic acid in the cell wall characterizes? - ✔✔Myobacteria. Which of the following is a fungis? - ✔✔Saccharomyces. Which microbe is correctly paired with its BSL level? - ✔✔MRSA; BSL 2. Which are the stages of bacterial growth in order? - ✔✔A. Lag, log, stationary, death. Which of the following are halogens? - ✔✔tincture of bromine, iodophor, betadine, all of these. Activation energy _____________. - ✔✔is lowered by the actions of enzymes. Insects that carry pathogenic microbes, but do not serve as hosts are considered ______________. - ✔✔Mechanical vectors. Which of the following is true of virions? A. They may include an envelope. B. They always include nucleic acid. C. They always include a protein capsid. D. All the above. - ✔✔They may include an envelope. They always include nucleic acid. They always include a protein capsid. All of these are correct. Which of the following drugs targets construction of the peptidoglycan cell wall? - ✔✔Beta-lactams. In which habitat would you most likely find archaea? A. acidic hot springs. B. great salt lake. C. deep sea waters. D. all the above. - ✔✔acidic hot springs. great salt lake. deep sea waters. all of these are correct. Single rods are? - ✔✔Bacilli. Which of the following is true of viroids? - ✔✔They contain only nucleic acid. Bacteria and archaea were seperated into different domains based on ____________. - ✔✔ribosomal RNS sequences. Pairs of rod shaped cells arranged end-to-end are ___________. - ✔✔Diplobacilli. Which of the following drugs targets bacterial cell membranes? - ✔✔Polymyxin. Chains of spheres are? - ✔✔Streptococci. During which phase of mitosis do the chromosomes decondense and nuclear membrane reforms? - ✔✔Telophase. Which is the primary stain in the Gram stain technique? - ✔✔Crystal Violet. During which phase of mitosis does the nuclear membrane disappear? - ✔✔Prophase. Techoic acid is found in the cell walls of ____________. - ✔✔Gram positive bacteria. Which is true of disinfectants? - ✔✔they are used to remove microbes from non-living surfaces. Glycolysis results in _________. - ✔✔2 molecules of pyruvic acid. Which is the primary stain in the capsule stain technique? - ✔✔Eosin. Animal viruses lay dormant (inactive) in __________. - ✔✔latency. Which enzyme class catalyzes the transfer of functional groups between substrates? - ✔✔Transferase. When placed in a hypertonic solution ____________. - ✔✔Crenation occurs and can kill bacteria. Which of the following is associated with Chlamydia? - ✔✔most common bacterial STD in US. Which of the following favored the theory of spontaneous generation? - ✔✔Needham. Which is true of radiation for microbial control? - ✔✔gamma rays are used to control microbes on fresh fruits. Which enzyme class catalyzes the splitting of a chemical into smaller parts without water? - ✔✔Lyase. Viral particles are continually shed during ___________. - ✔✔Persistent infection. When does DNA replication occur? - ✔✔Interphase. Who was the first to view protozoa and bacteria? - ✔✔Antoni van Leeuwenhoek Endospores of which organism(s) can be used as a biological indicator of sterilization? - ✔✔Bacillis stearothermophilus. When placed in a hypotonic solution __________. bacterial cells survive because of their cell walls. - ✔✔bacterial cells survive because of their cell walls. eukaryotic cells may burst. water rushes into cells. all of these are correct. Who developed the first smallpox vaccination? - ✔✔Edward Jenner. Which of the following microorganisms are NOT eukaryotic. - ✔✔bacteria. Comma shaped cells are ____________. - ✔✔Vibrio. Which is true of antiseptics? - ✔✔they are used to remove microbes from skin. If mesophilic bacteria are grown at very high temperature ____________. - ✔✔proteins will denature. cell membranes will become too fluid. hydrogen bonds will be broken. all choices are correct. Which of the following drugs targets protein synthesis? - ✔✔Tetracycline. Who is credited with the germ theory of disease? - ✔✔Louis Pasteur. Single spheres are __________. - ✔✔Cocci. Which of the following is true? - ✔✔Sterilization can be achieved by incineration. Which enzyme class catalyzes the transfer of electrons between molecules? - ✔✔Oxidoreductase. Which of the following is the correct sequence of viral replication? - ✔✔Attachment, Entry, Synthesis, Assembly, Release. [Show More]

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