To answer:
The use of biosensors for water quality testing and also determine whether biosensor detect the presence of microorganisms in water more accurately than an ONPG or MUG test and is such specificity truly necessary.
Introduction:
Water quality testing technique is used to detect the presence of indicator organism like Escherichia coli and other coliform or pathogenic bacteria in water. The presence of E. coli in water indicates the presence of other pathogenic strain. There are several methods to detect the presence of coliform in water. These methods are membrane filtration, ONPG test, biosensor, and MUG test.
Want to see the full answer?
Check out a sample textbook solutionChapter 25 Solutions
Microbiology with Diseases by Body System & Modified MasteringMicrobiology with Pearson eText -- ValuePack Access Card -- for Microbiology with Diseases by Body System Package
- In sterilization, which among the supplies, instruments, glassware, etc. under the list of materials can be sterilized using either or both equipment below? List them down under the category: a) For “autoclaving” only, B) For Dry heat oven sterilization ,And C) Can be sterilized with either. Materials: 200-ml Erlenmeyer flask Stove 500-ml Erlenmeyer flask Autoclave 10-mL graduated cylinder Analytical balance 100-ml graduated cylinder pH meter Spatula Stirring rod 100-mL beaker Test tubes Distilled water Petri dish Stirring rod Alcohol lamp Glass dropperarrow_forwardWhat is the physical appearance (solid, liquid, semi-solid) of following media: agar platearrow_forwardDescribe two methods of water analysis.arrow_forward
- In a(n) _________ test, the effectiveness of a microbial control agent is compared to that of carbolic acid. Question options: use-dilution in-use Kelsey-Sykes capacity phenol coefficient Entner-Doudoroff algebraarrow_forwardEMB agar inhibits the growth of Gram-positive bacteria while encouraging the growth of Gram-negative bacteria. It also can determine if some bacteria use lactose. It is particularly effective at determining if E. coli is present in a specimen. Define what type(s) of media EMB agar is, using as many terms in the answer list as are applicable.arrow_forwardIn sterilization, which among the supplies, instruments, glassware, etc. under the list of materials can be sterilized using either or both equipment below? List them down. For "autoclaving" For Dry heat oven Can be sterilized only sterilization with either Materials: 200-ml Erlenmeyer flask Stove 500-ml Erlenmeyer flask Autoclave 10-ml graduated cylinder Analytical balance 100-ml graduated cylinder pH meter Spatula Stirring rod 100-ml beaker Test tubes Distilled water Petri dish Stirring rod Alcohol lamp Glass dropperarrow_forward
- Why would the optical tweezers be a method superior to dilution and liquid enrichment for obtaining an organism present in a sample in low numbers?arrow_forwardURGENTarrow_forwardWhat are some characteristics of microbes and infectious agents that would require handling in a BSL-3 laboratory? What is the purpose of degerming? Does it completely eliminate microbes? What are some factors that alter the effectiveness of a disinfectant? When plotting microbial death curves, how might they look different for bactericidal versus bacteriostatic treatments? What are the benefits of cleaning something to a level of cleanliness beyond what is required? What are some possible disadvantages of doing so?arrow_forward
- Prove if the statement is TRUE or False with complete solution. At a dilution factor of, UHT-pasteurized milk sample X yielded the following bacterial colony counts when spread-plated in quadruplicates: 23, 20, 35, and 41 CFU/plate. As a result, the milk sample will pass laboratory standards if the total microbial limit is set to "not to exceed 30,000 CFU/mL of milk sample."arrow_forwardFor the following agar media used, list their significant components and explain how they react. Provide one example of a bacterium that will show change to the components (positive), and one example of a bacterium that will not show change or grow on the medium (negative).arrow_forwardOutline the different types of microbiology-based tests conducted in the pharmaceutical industry and what are they used for?arrow_forward