In the differential absorption heterophile test, what findings are diagnostic of IM?

Q: Why Do not add more than 2 drops of copper sulfate in Biuret reagent?

A: There are several biochemical tests to identify the presence of protein in a sample. There are tests…

Q: What is the logic behind testing for E. coli to detect fecalcontamination of water?

A: Bacteria are unicellular prokaryotic organism that maintains a definite shape since it contains the…

Q: Is the eosin methylene blue agar? (EMB) a complex or defined medium? Explain based on its…

A: Complex media consists of nutrients such as water soluble extracts of plant or animal tissue and…

Q: What are the advantages of the API 20E test compared to regular biochemical tube media

A: API 20E test helps in the determination of bacteria from lab-scale activated sludge treatment…

Q: Why del factor is important in media sterilization?

A: Sterilization, which was called by various means such as Del factor, Nabla factor and the…

Q: Kligler’s iron agar and SIM are multiple test media.. What component of both media allows you to…

A: Kligler’s Iron Agar (KIA) test is used in differentiating certain members of the Enterobacteriaceae…

Q: How to culture the media of L. bulgaricus and S. thermophiles properly by using aseptic technique?

A: For the culture of L. bulgaricus and S. thermophiles RCA (Reinforced clostridial) agar and ST…

Q: Explain why litmus milk is considered a good differential medium.

A: Differential media are the growth medium that helps in differentiating bacterial samples on the…

Q: how do microorganisms such as bacteria eliminate harmful reactive oxygen species?

A: Reactive oxygen species (ROS) are emerging as important elements in the bacterial response to lethal…

Q: What effect does the H2O2 have on bacteia in the catalase test?

A: The production of toxic substances like hydrogen peroxide due to metabolic activities can be lethal…

Q: In the multiple fermentation tube technique does the absence of gas formation after 24 hours…

A: Coliform microbes are life forms that are available in the climate and in the defecation of all…

Q: Besides better aeration and mixing properties, what other advantages do stirred tank bioreactors…

A: A bioreactor is a man-made device specially designed for supporting biologically active environment.…

Q: Under what conditions are media typically sterilized in an autoclave?

A: An autoclave is the pressure chamber used to carry out the scientific and industrial processes…

Q: Explain the following application of kefir. I) As food preservatives

A: Kefir is the fermented milk drink . It is similar to the thin  yogurt drink. It is also prepared by…

Q: Why is CFU more applicable to a culture of Streptococcus than to a culture of E. coli?

A: Colony-forming unit (CFU) represents the number of colonies formed on the media plate from one…

Q: Using pearson's square, how to attain 30o Brix syrup using  50oBrix and 20o Brix syrup solutions?

A: Here, the given two available syrups are 50°Brix and 20°Brix, that is one of the solutions is higher…

Q: What is Zeta Sedimentation Ratio?

A: As per our answering policy, we can only answer one question at a time. Please post the other…

Q: In casein hydrolysis what is the differance in weak + and strong+ reaction on the agar plate? Would…

A: The enzyme caseinase is secreted into the external media from the cells (an exoenzyme), catalyzing…

Q: Describe the Ninhydrin test. What does Ninhydrin test detect?

A: The ninhydrin test is a chemical procedure for detecting ammonia, primary/secondary amines, and…

Q: can the phenol red test also be used to determine if a certain bacterium can metabolze various…

A: Differential media is a type of growth media used in the labs to grow and differentiate or…

Q: Kligler’s iron agar and SIM are multiple test media.What physiological characteristic is detected by…

A: Both the Kligler’s iron agar test and SIM (sulfide, indole, motility) test media are widely used in…

Q: What is the use of hay infusion in determination of microbial motility?

A: Hay infusion use in determination of microbial motility.

Q: name the genus and species of 2 enteric bacteria that do not ferment lactose   discuss why a mixed…

A: Hi! As you have posted multiple questions and not mentioned which one of them to be answered, I will…

Q: What settings and time are normally used for sterilization in an autoclave?

A: The fundamental rule of steam sterilisation as cultivated in an autoclave, is to open every thing to…

Q: Why do you think autoclave sterilization of media is preferred over open flame?

A: An autoclave is used to sterilize surgical equipment, laboratory instruments, media  and other…

Q: What is differential medium

A: Differential medium or indicative media contain compounds which support the growth of microbes and…

Q: Identify a biochemical test that can differentiate Enterobacter agglomerans from Enterobacter…

A: Enterobacter cloacae is a part of the normal gut flora of humans and usually, it is not considered a…

Q: What is the media used in Urease Test and expected results?

A: Urease test is defined as a biochemical test that distinguishes the basic alkaline fermentation of…

Q: Voges Proskauer test Does color of the medium change to red after both reagents were added and…

A: Biochemical method of bacterial identification is a classical method that is used for the…

Q: What is the purpose of PSP (Phenolsulfonpthalein) Test?

A: Please follow step 2 for detailed explanations.

Q: Why is a GasPak anaerobic jar necessary for the culture of anaerobes on Brewer’s anaerobic agar…

A: Brewer’s anaerobic agar and fluid thioglycollate medium (FTM) are used to grow bacteria. Both of…

Q: Yoghurt starter culture is a mixed population of S. thermophilus and L. bulgaricus, both competing…

A: The living beings on this planet have been broadly divided into two categories - Plants and Animals.…

Q: In determination of microbial motility, what is the value of a hanging-drop perparation? what is the…

A: Hanging drop is a motility testing which helps microbiologist to view motility of bacterium.

Q: Voges Proskauer test Is it positive or negative for fermentation of glucose to 2,3 butanediol?

A: It is required to determine if Voges Proskauer test is positive or negative for fermentation of…

Q: Methyl red test does the color of the medium change to red when methyl red was added? Is it positive…

A: Biochemical method of bacterial identification is a classical method that is used for the…

Q: What is the effect of treatment of CER cells with chloroquine? Explain.

A: General Concepts Clinical Manifestations Rabies virus causes acute infection of the central nervous…

Q: Why are most iron-oxidizing chemolithotrophsobligate aerobes, and why are the better-studied…

A: An obligate aerobe is an organism that requires the presence of oxygen for their growth.  During…

Q: what is the procedure of solving the probelems of cultures those are suffering severely due to…

A: This is the defense compound of the plant and are toxic in nature because of that preventing plant…

Q: Aside from Paraffin, what is your recommended infiltrating medium for routine purposes? why?

A: INFILTRATION is the process in which the clearing agent is completely removed from the tissue and…

Q: operties of the Snyder deep media allow us to detect susceptibility to dental caries?

A: Dental caries (tooth decay) is injury to enamel of tooth that be converted into little holes or…

Q: Explain why it is important to wash the wells with PBS between the additions of each reagent?

A: ELISA is a enzyme linked immunosorbent eassay. It is a process to get the measurements of antigens…

Q: Why is egg enrichment not added to BPA prior to sterilization?

A: Baird–parker agar or BPA is a selective medium is identify or isolate S. aureus in food. It contains…

Q: Why do we grow the bacteria in minimal media when testing for citrate utilization

A: Minimal media are those that provide the minimal nutrients possible for colony development, usually…

Q: Why bacterium Thermus thermophilus is used ?

A: Thermus thermophilus is a Gram-negative bacterium used in a range of biotechnological applications,…

Q: What is the Bench Side Biochemical Test for Enterococcus faecalis and Proteus mirabilis?

A: A "microbe" is a living entity that is so tiny that it cannot be seen with the naked eye.…

Q: Why are the chlorophylls less mobile on column chromatography, and why do they have lower Rf values…

A: Carotenes are photosynthetic pigments important for photosynthesis. They contain no oxygen atoms.…

Environmental health and hazards

An organism's environment is the environment in which it lives and has an impact on its well-being. The World Health Organization (WHO) defines environmental health as "those aspects of public health, such as quality of life, that are influenced by physical, chemical, biological, social, and psychosocial components in the environment." Environmental health is concerned with both natural and man-made settings in order to enhance public health. Environmental science, occupational medicine, toxicology, and epidemiology are the key subdisciplines of environmental health.