which of the following definitions is not technically correct? a. broad spectrum - effective against many different types of microbes b. bacteriostatic - prevents microbes from growing c. antibiotic - microbial or synthetic product that kills or inhibits growth of microbes. d. all of the above are correct

which of the following definitions is not technically correct? a. broad spectrum - effective against many different types of microbes b. bacteriostatic - prevents microbes from growing c. antibiotic - microbial or synthetic product that kills or inhibits growth of microbes. d. all of the above are correct

Comprehensive Medical Assisting: Administrative and Clinical Competencies (MindTap Course List)

6th Edition

ISBN:9781305964792

Author:Wilburta Q. Lindh, Carol D. Tamparo, Barbara M. Dahl, Julie Morris, Cindy Correa

Publisher:Wilburta Q. Lindh, Carol D. Tamparo, Barbara M. Dahl, Julie Morris, Cindy Correa

Chapter38: Introduction To The Medical Laboratory

Section: Chapter Questions

Problem 9CR

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A compound synthesized by bacteria or fungi that destroys or inhibitsthe growth of other microbes is a(n)a. synthetic drug b. antibiotic c. antimicrobial drug d. competitive inhibitor
The first step for directly linking a microbe to a specific disease according to Koch's postulates is to A.isolate microbes from the blood of healthy animals. B. culture the blood or other body fluid from a diseased animal using nutrient medium. C. inject a sample of blood or other body fluid from a diseased animal into a healthy animal. D. obtain a sample of blood or other body fluid from a diseased animal.
which of the following is not a way that normal microbial prevent growth of competing microbes? a. production of substances harmful to competitors b. more efficient utilization of nutrients c. changing pH of environment d. all of the above are used by normal microbiota against competitors e. none of the above are utilized by normal microbiota
Which of the following is NOT true about Koch's postulates? First developed by Robert Koch, the pioneering German microbiologist In the first step, the microbe that causes a naturally occurring disease is cultured from a "wild" (non-laboratory) animal which has that disease None of the other four answers (All are true about Koch's Postulates) They represent a process for showing a causal association between a specific microbe and a disease If the same microbe from a diseased "wild" (non-laboratory) host causes the same disease in a lab animal and it can be cultured from that lab animal, this proves that the microbe is the cause of the naturally occurring disease
The following are the limitations of Koch's postulates EXCEPT: A. some pathogens cannot grow on artificial media and therefore cannot be identified as the causative agent of the disease B. some diseases involve multiple pathogens which produce similar symptoms making it difficult to pinpoint the causative agent C. some diseases are host-specific and re-inoculation may pose ethical concerns D. some microorganisms are present in the body fluids of the infected animal which make them difficult to be cultured
Some bacteria produce the enzyme penicillinase, which breaks the beta-lactam ring in the penicillin molecule and converts it into penicilloic acid, which is harmless to bacteria. This is an example of which of the following mechanisms of antibiotic resistance? which option below is the answer? Destruction or inactivation of the antibiotic by the microbe Preventing penetration to the target site within the microbe Alteration of the drug’s target site(s) within the microbe None of the other four answers are correct Rapid ejection (pumping) of the drug out of the microbial cell
Which of the following are criteria for antibiotics? (select all that apply) Chemical substance produced by a microbe Kills viruses Stops the growth or kills other microorganisms Effective in small doses
Which of the following is a criteria used to evaluate an antibiotic? Which of the following is a characteristic or criterion used to evaluate an antibiotic? The answer can be one or more) Select one or more: O a. should not interfere with host defense mechanisms O b. should not kill normal host flora O c. must remain active even in the presence of organic matter O d. show selective toxicity
Select all that applies: Which of the following is the least appropriate pairing of microbe and biosafety level? A. E. coli, BSL-3 B. anthrax, BSL-1 C. Ebola, BSL-2 methicillin-resistant Staphylococcus D. aureus (MRSA), BSL-2 E. Malaria, BSL-1
As microbes come in contact with humans there are variables that come into play determining if the microbe will cause infection, colonize onto the host without any issues or is removed by the hosts immune system. Microbes that become associated with us and don't cause any issues should be a benefit and provide us with something useful (i.e. vitamin or prevent colonization of other microbes). Please research a microbe that is normally associated with us, considered a normal flora, and provides a benefit. Answer each of the following about the microbe you choose. 1. Scientific name of the microbe. 2. Where it is normally found on/in the human body? 3. What is the benefit/advantage the microbe provides to us? Explain in 3-4 sentences. 4. An interesting fact about the microbe not related to the benefit/advantage. 5. Can this microbe cause disease in its human host? Explain why or why not in a few sentences.
Which of the following pairs id mismatched? A. Virologist – studies human immunodeficiency virus B. Microbial ecologist – studies bacteria that degrade oil C. Microbial physiologist – studies fermentation of sourdough bread D. Immunologist – studies ecology of Legionella pneumophilia Which of the following pairs is mismatched? A. Chemotheraphy – treatment of disease B. Pathogen – disease causing C. Vaccine - preparation of microorganisms D. Normal microbiota – harmful
Many visits to your physician do not result in a culture or a drug-test of the causative infectious agent, yet you still leave with a prescription for antibiotics. Name one instance where it would be best to be prescribed a narrow spectrum antibiotic. Name a second instance where it would be best to be prescribed a broad spectrum antibiotic.