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

Midterm Exam - BIOS242 / BIOS 242 (Latest 2022 / 2023) Fundamentals of Microbiology with Lab - Chamberlain Document Content and Description Below 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 Less Last updated: 8 months ago