Mic 205A Exam 3 Questions Answered Correctly Latest Update 2026

MIC 205A EXAM 3 QUESTIONS ANSWERED CORRECTLY LATEST UPDATE 2026 Which of the following is a possible approach for a future chemotherapeutic agent? - Answers all are possible approaches for future chemotherapeutic agents Some microbes secrete membrane attack complexes to destroy the phagocyte, and a microbe that does this is - Answers Listeria monocytogenes You are a clinical laboratory scientist and are asked to prepare and stain a blood smear from a patient in order to perform a differential white blood cell count. The patient has an unusually high number of leukocytes with prominent red-colored granules. What type of leukocyte fits this description? - Answers eosinophil What factors must we consider when determining the effectiveness of chemotherapeutic agents? - Answers resistance to chemotherapeutic agents, safety of the chemotherapeutic agent, and combinations of drugs A 68-year old man reported to the clinician with a 9-day history of moderate diarrhea, poor appetite, severe fatigue, and a fever of 103 degrees Fahrenheit. The physical exam was normal and lab tests were normal, except for leukocytosis with eosinophilia. An X-ray of the man's chest showed a lesion in the upper lobe of the right lung and a small nodule in the left lung. The high level of eosinophils led the clinician to order a stool test, which was negative. The clinician asked the man about any recent travel, and the man reported that 3 months previously he had gone on a vacation and stayed at a working sheep farm with sheepdogs. Based on this information, the clinician began to suspect he should test the man for: - Answers echinococcus granulosus The minimum bactericidal concentration is the lowest concentration of a chemotherapeutic agent that kills the bacterium and is used in reference to diffusion methods. - Answers false Inactivating drugs by enzymes, alteration of a drug target, inhibition of drug intake, and rapid efflux are all examples of - Answers mechanisms of drug resistance A group of patients with a chronic viral infection affecting the liver were tested for their innate immune response to the virus. The patients had the chronic form of the disease, where the patient's own immune cells react against infected liver cells, destroying the cells, and contribute to causing extensive liver damage. What infectious agent is being described, and what cell is directly involved in killing infected liver cells? - Answers hepatitis B virus, natural killer cells Which of the following statements is true about the innate immune system? - Answers it consists fo physical and chemical factors Conjugation, transduction, and transformation are all examples of: - Answers how antibiotic genes are transferred Which drug was traditionally used to treat malaria? - Answers quinine Which drug is used to treat tapeworms and works by altering the permeability of the plasma membranes of cells of tapeworms? - Answers none of these drugs Which of the following is an inhibitor of nucleic acid synthesis? - Answers all inhibit nucleic acid synthesis (fluoroquinolone, rifamycin, and quinolone) Which of the following antimicrobial agents is an inhibitor of translation? - Answers tetracycline Which of the following is a category of antiviral drug? - Answers all are categories of antiviral drugs (nucleoside analog, antiretroviral, protease inhibitor) Which of the following works by inhibiting endospore-forming bacteria in food? - Answers nisin Which surface-active agent works by sanitizing via the negatively charged portion of the molecule? - Answers acid-anionic agent A patient reports to the clinician with respiratory symptoms. Which of the following microbes can have respiratory symptoms, due to the microbe at some point affecting the respiratory system? Click all that apply. - Answers MERS virus, Coccidioides immitis Quaternary ammonium compounds are extremely effective at killing endospores. - Answers false Which are NOT methods of controlling microbes damages by creating thymine dimers? - Answers gamma rays, low temps, high pressure A woman in rural Texas reports to her local clinic with muscle weakness in her hands and feet. When examined by the physician, it is noted that she also has skin lesions, and upon further examination, the skin associated with the lesions are numb (she has loss of feeling in the areas with the lesions). The physician orders a skin biopsy of the lesions. The skin tissue is processed and reveals bacteria that stain fuchsia (due to carbolfuchsin). The physician prescribes two antibiotics for 12 months. Upon further inquiry, the patient admits to regularly consuming armadillo that may or may not have been fully cooked, and she is told that this is risky, and may have been how she became infected. Is the following statement true or false regarding the category of microbe and microbial characteristics? The microbe is Gram-positive and has a cell wall that is primarily composed of a thick layer of peptidoglycan. - Answers false What type of disinfectant is chlorhexidine? - Answers biguanide A woman in rural Texas reports to her local clinic with muscle weakness in her hands and feet. When examined by the physician, it is noted that she also has skin lesions, and upon further examination, the skin associated with the lesions are numb (she has loss of feeling in the areas with the lesions). The physician orders a skin biopsy of the lesions. The skin tissue is processed and reveals bacteria that stain fuchsia (due to carbolfuchsin). The physician prescribes two antibiotics for 12 months. Upon further inquiry, the patient admits to regularly consuming armadillo that may or may not have been fully cooked, and she is told that this is risky, and may have been how she became infected. The microbe is: - Answers mycobacterium leprae A 34-year-old woman reports to the clinician with loose stools, gas, and abdominal cramps and mentions the symptoms have been occurring for a week. The clinician asks about any recent travel, and the woman mentions a camping trip two weeks ago in the wilderness. When asked about drinking water, the woman mentions enjoying the pristine cool stream water for drinking.