Is  Bacillus cereus negative or positive for methyl red, and  Voges-Proskauer tests?

Q: Between Bacillus megaterium, Bacillus sphaericus, and Bacillus subtilis, which are positve for…

A: MSA or Mannitol Salt Agar is a differential and selective medium that encourages the growth of some…

Q: Methyl red test Does a Phenol red organism have to be methyl red?

A: It is required to find if the Phenol Red organisms are also Methyl Red in the indicator tests.

Q: What gram-positive bacterium can give a positive presumptive test?

A: In microbiology, the presumptive test is used to find out the presence of gas-forming lactose…

Q: Why is skin contamination such a big problem in blood culture test?

A: Contamination can arise during the preparation of the venipuncture or catheter insertion site, the…

Q: Alchohol based hand sanitizers are effective against influenza. True/False?

A: Influenza is a viral infection caused by the influenza virus. It is commonly known as flu. There are…

Q: What test requires inoculation of rabbit serum?

A: The formation of  clot in the plasma indicates coagulase production. Coagulase is a protein enzymes…

Q: Between, Shigella flexneri and Shigella sonnei, which are positive and which are negative for…

A: Shigella is a group of gram-negative, non-motile, non-capsulated, non-endospore-forming bacilli that…

Q: What is the role of H2SO4 in Hopkins cole test?

A: The Hopkin's Cole test, sometimes known as the 'glyoxylic acid test,' is a method for detecting the…

Q: What is the principle of Molisch test, Benedict test, Biuret test, Xanthoproteic test, Sudan test,…

A: The tests that are mentioned above are the tests used for identification of biomolecules like…

Q: Is it possible for nonprotein compounds to test positive for the xanthoproteic test? What are these…

A: Proteins are made up of number of amino acids. Amino acids are organic compounds with two functional…

Q: What is the chemical basis of the Xanthoproteic Test? Give the chemical reaction involved.

A: Protein is a nitrogenous organic macromolecule that is essential to human health. It is responsible…

Q: What is the difference between Benedict and Barfoid's test?

A: Both Barfoeds and Benedict’s solution are made from same ingredients. But their capabilities are…

Q: which bacteria is Coccobacillary,gram negative, non motile and negative oxidase test?

A: Bacteria are microscopic organisms which belong to prokaryote because these are unicellular…

Q: Between Shigella flexneri and Shigella sonnei, which are positive or negative for methyl red test…

A: Genus Shigellae are Gram-negative rod shaped, facultatively anaerobic, non-motile, non-spore-forming…

Q: How will you prevent the occurrence of the bacteria present in the Rapid Strep A Test?

A: Answer:  Rapid Strep A Test (Rapid strep test) is a test used to identify the presence of Strep A…

Q: What is the purpose of the TSI test?

A: A triple sugar iron test or TSI test is used to test a microorganism's ability to ferment sugar and…

Q: Between Proteus mirabilis and Proteus vulgaris which are positive or negative for ornithine…

A: ornithine decarboxylase test is a special kind of biochemical test that helps to determine whether…

Q: What is MODIFIED ALLEN TEST?

A: Blood is an important fluid tissue that is used to transport nutrients and oxygen to all parts of…

Q: Why is glucose not the choice of carbohydrate for most differential media used in the identification…

A: Bacilli present in the intestinal tract are rod shaped bacteria.for example, enteric bacteria…

Q: What is the principle involved in the Acrolein test? What is its purpose?

A: Qualitative tests are the chemical or physical tests involved in identification of certain…

Q: Describe the biuret test. What does the Biuret test detect?

A: There are different types of biomolecules. The biomolecules greatly differ in their physical and…

Q: Is bile esculin test a efficient test for unknown intestinal bacteria?

A: In the intestine, only those bacteria that are not killed by the bile survive. The normal bacteria…

Q: Is  Bacillus cereus negative or positive for growing in high salt concentrations?

A: Bacillus cereus is a gram-positive, endospore forming, non-capsulated bacillus, motile with…

Q: How does one can differentiate staphylococcus aureus from streptococcus, with the test use, color,…

A: • Staphylococcus aureus is the most risky of the entirety of the numerous normal staphylococcal…

Q: How do eosin-methylene blue (EMB) agar plates work? What organism(s) are they designed to detect?…

A: Several tests are performed in the laboratory in order to detect several bacterial agents as well as…

Q: What test can be performed to differentiate between group A and group C streptococci?

A: Bacteria are a group of prokaryotic microscopic single celled organisms. They live in diverse…

Q: Is there a relationship between Gram staining and sensitivity to various antibacterial compounds?…

A: Gram staining is a method to identify whether a bacteria is gram positive or gram negative based on…

Q: What is the importance of performing the Modified Allen Test? Give at least three.

A: Modified Allen test: This test is done to assess the integrity of the ulnar artery, To perform this…

Q: What are some advantages and disadvantages of using blood agar vs. the Staph-Tex test to…

A: Hi, Thanks For Your Question.  Answer : Advantages Of Using Blood Agar To Differentiate Between S.…

Q: Is phenol red test a efficient test for unknown intestinal bacteria?

A: Fermentation of carbohydrates is the method used by microorganisms to produce energy. Phenol Red…

Q: Explain how staphylococcus capitis  test is different from streptococcus salivarius  test ?

A: Streptococcus salivarius and Staphylococcus capitis are both pathogens for humans. These two…

Q: On the basis of the appearance of this place, what are you testing for? When you added a reagent to…

A: Catalase is an enzyme that reacts with hydrogen peroxide to form water and oxygen. Catalase enzyme…

Q: What is the proper way of Modified Allen test?

A: Allen test are the tests used to assess the arterial blood supply of the hands. This test is used…

Q: Of , Shigella flexneri and Shigella sonnei, which are positive and which is negative for…

A: The ability of an organism to generate the enzyme deaminase is tested using a phenylalanine…

Q: Which test require a straight line inoculation? Choose all that apply. A) Bile esculinase B) NaCl…

A: Inoculation is a form of immunisation that involves the introduction of an infectious material onto…

Q: What is the purpose of Durham test ?

A: In the carbohydrate fermentation test, we determine whether the bacteria are able to ferment a…

Q: Between Bacillus megaterium, Bacillus sphaericus, and Bacillus subtilis which are positive or…

A: The VP test detects organisms that utilize the butylene glycol pathway and produce acetoin. It…

Q: Describe the step-by-step procedure for preparing a thick and thin smear to test for malaria.

A: Malaria is a vector-borne disease that is caused by the parasite Plasmodium. This disease is…

Q: A. Why did Lilly use acid fast staining to diagnose the presence of Mycobacterium tuberculosis…

A: Since you have asked multiple questions, we will solve the first question for you. If you want any…

Q: What microorganisms other than coliforms are likely to give positive presumptive test?

A:

Q: what are the Amino Acids that test positive for Ninhydrin test? what is the principle of detection?

A: All the alpha amino acids test positive for ninhydrin test.

Q: What test can be performed to differentiate the enterococci from other group D streptococci?

A: Group D streptococci are separated into enterococcal species, including S. faecalis, S. faecium, and…

Q: What is similar about this test and the TSIA test?

A: SIM medium is used to check different parameters such as Sulphur Reduction, Indole Production,…

Q: Based on the journal article “Interpretation of the Tube Coagulase Test for  Identification of…

A: The coagulase test works on the principle that a coagulase enzyme causes the plasma to clot through…

Q: In the entrropluri tube system which test require the addition of reagents after the incubation time…

A: Entreropluri test system is a Enterobacteriaceae identifying system. It is use to identify some gram…

Q: What is Hemin test and Benzidine test?

A: Hemin test - Hemin can be produced from haemoglobin by the so-called Teichmann test, when…

Q: Between  Bacillus megaterium, Bacillus sphaericus, and Bacillus subtilis which are positve and which…

A: oxidase test in microbiology is the best that is used for the determination of an organism that…

Q: What is the principle of Bial's test?

A: Bial’s test is known as biochemical test which is used to detect the presence of carbohydrates as…

Q: What single test differentiates Staphylococcus aureus from other species of staphylococci? What is…

A: Staphylococcus aureus is present on human skin and anterior nares along with other mucous membranes.…

Microbial Growth

The development of microbial growth is influenced by various natural conditions (both physical and synthetic) like pH, temperature, saltiness, gas focus (O2, CO2, and H2), nutrients, water action, and assimilation. Knowing the distinctive physical and chemical factors that influence the development and endurance of microbial growth in the climate will assist with reinforcing endeavors outfitted towards their control. These lines lessen or diminish their harmful impacts on humankind, creatures, and the climate.