The agar turns pink because the enzyme produces which causes a pH change to Ammonia, alkaline OA. Putrescine, acidic O B. Putrescine, alkaline OC. Ammonia, acidic

Q: If the result of an unknown bacteria is “poor growth” and “red growth,” can this result be…

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

Q: Ex. 5-4 Catalase 1) In the Catalase test (5-4), if bacteria was added to hydrogen peroxide on the…

A: The study of tiny living creatures such as bacteria, viruses, fungus, algae, and protozoa is known…

Q: Two different bacterial samples, A and B, were inoculated onto SIM media. What can you conclude…

A: SIM (Sulfide, Indole and Motility) test is done to differentiate the Gram negative bacilli based on…

Q: O O What is the component in a biochemical media test responsible to inhibit a certain group of…

A: Biochemical tests are helpful in identification of bacterial species by separating them on the…

Q: Which characteristic of the species used determines whether sterility was achieved when autoclaved?

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Q: Why does motility media contain a lower amount of agar than ordinary agar?

A: Agar is a phyco-colloid polymer of galactose monomers obtained from red algae (Gelidium and…

Q: Your instructor asks you to explain why the Streptococcus speciesthat are catalase negative are…

A: Bacteria are prokaryotic organisms that have an undefined nucleus and nuclear membrane. Most of the…

Q: How do you calculate the amount of ammonium sulfate necessary to get a 20% solution?

A: Ammonium sulfate is the most commonly used for protein precipitation in protein purification.

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A: A culture medium is defined if it contains various constituents with known and measurable…

Q: Give two ways to prevent the diffusion of oxygen into the medium in this test.

A: The main two ways to prevent the diffusion of oxygen are given below.

Q: You inoculate a species of bacteria on a MacConkey agar which normally shows positive growth and the…

A: MacConkey Agar (MAC) is selective and differential agar that is used to isolate non-fastidious…

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A: Dialysis membrane is a semipermeable membrane and allows only a few substances to pass on as…

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

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A: Introduction:- Cells are the basic structural and functional unit of life. Cells are capable of…

Q: what type of bacteria would be used to make sauerkraut?

A: Sauerkraut is product of cutting raw cabbage that fermented by various lactic acid bacteria. The…

Q: Nitrate reduction test can be used to differentiate between Pseudomonads and Enterobacteriaceae. You…

A: The nitrate reduction test is used to differentiate between Pseudomonads and Enterobacteriaceae or…

Q: Why does the nitrate reduction tube turn red after the addition of zinc?

A: Nitrate reduction test is used to find the bacteria who have the ability to reduce the nitrate.

Q: Koch's postulates include all of the following EXCEPT O 1) Isolate the organism in pure culture. The…

A: Koch's postulates are a series of findings and experimental criteria suggested in the late 1800s by…

Q: Sulfur Indole Motility (SIM) Medium H2S produced, color and +/-: ______________________________…

A: Sulphur indole motility medium used to test the ability of am organism to have properties of…

Q: In step 3 of today's protocol, it mentions that the incubation step with the P2 buffer should not be…

A: P2 buffer is a lysis buffer solution containing sodium dodecyl sulfate to puncture holes in cellular…

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A: Introduction The Lysine Decarboxylase Test Is Based On Some Bacteria's Capacity To Convert L-lysine…

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A: Depending on their composition, media can be classified as defined and undefined media. Defined…

Q: Which of the following is FALSE?   Question 3 options: A Some bacteria reduce nitrate to nitrite…

A: Biochemical tests are the basic tests that are used for bacterial identification. These tests help…

Q: Which of the the following results of the extracellular enzyme tests is FALSE?    Question 3…

A: Answer: Extracellular Enzymes or Exoenzymes are the enzymes secreted by the organisms or cells and…

Q: Each liter of an intranasal antibiotic solution contains 160 mg of gentamicin. You have 2-mL…

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Q: f you diluted 200 uL of your culture into 1800 uL of water what is your dilution factor? (Show your…

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Q: Heat-labile material to be introduced to culture medium was filtered using membrane filters with…

A: given that the heat labile material which is introduced to culture media is filtered using a…

Q: The Bradford reagent gives a linear response only from 0.1 mg/mL to 1.4 mg/mL of protein…

A: There are several biochemical tests that are used to determine the concentration of protein in a…

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

Q: Can you describe a situation where high-level disinfection would be needed? Medium-level? Low-level?

A: Disinfection is the process in which pathogenic microorganisms are eliminated by means of chemical…