Which of the following acts as a test organism in the procedure of phenol coefficient method
Which of the following is used as a test organism in the phenol-coefficient method procedure? Explanation: The phenol-coefficient method procedure uses a particular strain of either Salmonella typhi or Staphylococcus aureus as the test organism.
Which method used for assay of vitamin B12
Microbiological assay has been the most widely used assay technique for foods and has been used for the majority of available food nutrition datasets. Other methods for the analysis of vitamin B12 include polarographic, spectrophotometric, radio-ligand binding, and various chromatographic techniques.
Why is the Zone of Inhibition used
The zone of inhibition, which is a ring-shaped region around the antibiotic where bacteria colonies dont grow, can be used to gauge how susceptible a particular strain of bacteria is to an antibiotic.
Which device is used to pick a single bacterial cell from a mixed culture
Explanation: A single bacterial cell from a mixed culture can be extracted using a tool called a micromanipulator and a microscope.
Which clinical situation would be appropriate for treatment with a broad spectrum antimicrobial drug
14.2: Antibacterial Drugs When there is not enough time to identify the etiologic agent or when narrow-spectrum antimicrobials are ineffective, broad-spectrum antimicrobial use is justified for serious systemic infections.
Which of the following does not affect the activity of penicillin
Explanation: The actions of saliva and bile do not affect the activity of natural penicillins, which are inactivated by heat, cysteine, sodium hydroxide, penicillinase, and hydrochloric acid.
Which of the following phage do not cause Lysogeny
Explanation: Phages produced by lysogenic strains are known as temperate phages, and the relationship between the phage and the bacterium is known as lysogeny. Phages like T2 that do not cause lysogeny are referred to as virulent.
Which of the following is used as a solidifying agent for media
Which of the following serves as a solidifying agent for media? Explanation: Agar, when dissolved in aqueous solutions, gels at temperatures below 45 degrees Celsius, but it is not thought to be a source of nutrients for the bacteria.
What are antimicrobial compounds
A natural or artificial substance known as an antimicrobial agent is one that prevents the growth of microorganisms like bacteria, fungi, and algae.
What is a growth factor analog
Competitive Inhibitors The competitive inhibitors are mostly all synthetic chemotherapeutic drugs; the majority are “growth factor analogs,” or substances that resemble bacterial growth factors structurally but do not carry out their metabolic function in the cell. Some of these drugs are bacteriostatic, while others are bactericidal.
Are fungi used in antibiotics
The antibiotic era began between 1945 and 1955 with the discovery of penicillin, which is made by a fungus, along with streptomycin, chloramphenicol, and tetracycline, which are made by soil bacteria (Figure 1).
Which of the following has its antiviral action attributed to the interference of protein synthesis
Which of the following has its antiviral action attributed to the interference of protein synthesis? Clarification: Interferons are one of the most promising chemotherapeutic agents for treating viral diseases.
Which of the following is a bacteriostatic
Erythromycin is a bacteriostatic drug that inhibits microbial growth.
Which of the following pathways is specifically inhibited by sulfonamides
Which of the following pathways is specifically inhibited by sulfonamides? protein synthesis. Most drugs that inhibit the synthesis of the cell wall act by preventing the cross-linkage of NAM subunits.
What type of agar is used to perform the Kirby Bauer test
Mueller-Hinton agar (MHA) is the standard medium for the Kirby-Bauer method of susceptibility testing .
What does the Kirby Bauer disk diffusion test assess quizlet
A useful standard tool for evaluating the efficacy of antimicrobics against pathogenic microorganisms is the disk diffusion test, which involves placing antimicrobic impregnated paper disks on a plate that has been inoculated to create a bacterial lawn.
Which was the first disease for which a chemotherapeutic agent was used
The earliest known instance of chemotherapy dates back to ancient Peru, where native people treated malaria with cinchona tree bark.
When did Antibiotics cure disease
Smallpox, cholera, diphtheria, pneumonia, typhoid fever, plaque, tuberculosis, typhus, syphilis, and other infectious diseases were common, and the discovery of penicillin by Sir Alexander Fleming (1881-1955) in 1928 signaled the start of the antibiotic revolution.