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

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: 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: what is the procedure and materials you need to stain Staphylococcus aureus?

A: Staphylococcus aureus is a Gram-positive, round-shaped bacterium hat belongs to the Firmicutes and…

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: y is an organism such as Staphylococcus adapted to growth on the human skin but the streptococci are…

A: When the pH and temperature of the environment are right, a creature can thrive there,

Q: What is the purpose of flame-sterilizing the mouth of the test tube and the side of the Petri dish…

A: Flame is an excellent way of cleaning a surface from contaminating organisms. Instant high heat…

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: You have isolated a Gram positive cocci from a throat culture. You have determined that it is…

A: Gram-positive bacteria have a single cell wall anchored to the cell membrane by lipoteichoic…

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: Is Endospores stain test a efficient test for unknown intestinal bacteria?

A: Staining provides valuable information as to bacterial morphology, gram reaction, and presence of…

Q: Explain the importance of determining the hemolytic pattern in identifying and isolating…

A: Of the several enzymes produced by bacteria, there are hemolysins that break down red blood cells.…

Q: In this lab exercise, were the results of the indole test necessary to differentiate between…

A: The microbes that affect the intestine of an individual are referred to as enteric pathogens. The…

Q: What is the main purpose of haemolytic tests? What is the main substance responsible for this…

A: Pathogenic microrganism are the microbes that has capability to cause disease and infection inside…

Q: Which microbe requires serum components to be added to the growth medium?

A: Some microbes are nutritionally fastidious and hence needs some substances to be added to the growth…

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: B.cereus

A: Bacillus is a genus of rod shaped, gram positive aerobic or facultatively anaerobic bacteria found…

Q: What test would confirm the presence of Bacillus Cereus?

A: B. cereus is the bacteria species come under rod shaped bacteria, they are motile bacteria and form…

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: How can we differentiate a Bacillus cereus from B. subtilis if both are beta hemolysis?

A: Answer:  BETA HEMOLYSIS = It is the complete lysis of red blood cells in the agar, around the…

Q: Name two tests that are useful for the differentiation of pneumococci and oral viridans…

A: Pneumococci or Streptococcus pneumonia is a spherical, Gram-positive bacterium. They are generally…

Q: In order to view Treponema pallidum, the causative agent of syphilis, under the microscope, you can…

A: In test we are detecting a bacteria under microscope (fluorescence microscope) and the tag are uses…

Q: Is proteus vulgaris positive or negative in lia test? Why?

A: Proteus vulgaris is a gram negative bacteria that test positive for indole and catalase production.…

Q: The patient, who presented with complaints such as sore throat, fever, weakness, and swollen…

A: Streptococcus pyogenes is a beta hemolytic gram positive bacterium that serve as the causative agent…

Q: How would you devise a selective medium for Vibrio cholerae?

A: Mostly for selecting the agar medium as a enrichment broth, alkaline peptone water and thiosulfate…

Q: You are provided with a mixed culture of Escherichia coli and Pseudomonas aeruginosa, draw a flow…

A: Escherichia coli and Pseudomonas aeruginosa both are gram negative bacteria that can cause severe…

Q: According to the hemolysis results, how does Bacillus cereus differ from B. subtilis?

A: Given: To find how does Bacillus cereus differ from B. subtilis.

Q: a specimen from an infected wound has been submitted to the clinical laboratory. explain in detail…

A: Viruses, bacteria, fungus, protozoa, and helminths are the five types of disease-causing agents…

Q: What is the best lab test to perform for a unknown intestinal bacteria?

A: Bacteria found in the intestine or colon region of the digestive tract since the pH of the stomach…

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: 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: 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: How this Bacillus cereus can be find? what kind of testing require ? Is it through plate or brooth…

A: Bacillus cereus is a Gram-positive, rod-shaped, facultatively anaerobic, flagellated,…

Q: What test can help you differentiate staphylococci from streptococci? What reagent or media would be…

A: Both are gram positive bacteria.

Q: Before using the API® Staph System, what tests should be performed on bacteria to confirm that they…

A: API Staph (analytical profile index) is a systematized procedure used for the identification of the…

Q: Enterotube: Which group of bacteria are detected using this test? Which specific chemical tests are…

A: The Enterotube is an illustration of a quick, multi test framework utilized in Identifying of…

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: Why do we need to transport the throat swab using transport culture medium?

A: Transport media are essentially solutions of buffers with carbohydrates, peptones and other…

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

A:

Q: what is your initial assumption of the organism causing this disease

A: Bacteria are the prokaryotic microorganism and based on the structural cell walls, Gram stain…

Q: How is the Gram stain used clinically to help identify the cause of an infection?

A: Gram stain or sometimes "Gram staining", likewise called Gram's method, is a technique for staining…

Q: You want to isolate staphylococci from a clinical sample, as you suspect the patient nas an…

A: Staphylococcus aureus : It is gram positive , round shaped bacteria and is a usual member of…

Q: What would be the expected out come of a gram staining test If the bacteria is a pathogenic…

A: Gram staining is a common technique used to differentiate two large groups of bacteria based on…

Q: The Lancefield classification of streptococci is based on what property of these cells?

A: Streptococci are Gram positive bacteria. They give catalase negative test. When they cultured on…

Q: What staining is used in Mycobacterium pneumonia?

A: Staining is the technique used to  enhance contrast in samples, generally at the microscopic levels.…

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: Why do we interpret positive hemolysis in the complement fixationtest to mean negative for the test…

A: Complement fixation test is an immunological blood test in which presence of specific antigen or…

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: Is Nitrate reduction test a efficient test for unknown intestinal bacteria?

A: Nitrate Reduction Test is used to determine the ability of an organism to reduce nitrate (NO3) to…

Q: Is Staphylococcus epidermidis catalase positive or negative?

A: Staphylococcus epidermidis  Introduction:- Gram-positive bacteria Basically, it is harmless Present…

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.