Homework Answers
Answer : The correct option is B ( Bacteria that produces Cytochrome C oxidase)
Explanation : Oxidase tests involves the use of oxidase reagent, N, N, N', N'-tetramethyl-p-phenylenediamine dihydrochloride (TMPD dihydrochloride) which acts as a artificial electron donar for oxdase enzyme. If the test is positive means, a given bacterium produces cytochrome C oxidase which oxidises the reagent which turns into dark blue.
Examples of oxidase positive bacteria includes Pseudomonas, Neisseria,
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OXIDASE REAGENT POS NEG What does the positive test result indicate? Select one: a. bacteria that...
What is the enzyme that is responsible for this positive test result? Select one: a. Cytochrome...
What is the enzyme that is responsible for this positive test result? Select one: a. Cytochrome Oxidase b. Catalase c. Gelatinase d. Proteinase
The results of the following unknown bacteria sample would be: A B. Select one: a. Oxidase...
The results of the following unknown bacteria sample would be: A B. Select one: a. Oxidase positive and catalase positive b. Oxidase negative and catalase positive c. Oxidase positive and catalase negative d. Oxidase negative and catalase negative
If bacteria oxidize the the Oxidase test reagent the reagent will turn Bright Pink in color....
If bacteria oxidize the the Oxidase test reagent the reagent will turn Bright Pink in color. a. Agree b. Disagree Cytochrome oxidase is an enzyme found in some bacteria that transfers electrons to oxygen. a. Agree b. Disagree Phenol Red pH indicator will turn what color under alkaline conditions? a. Yellow b. Blueish Green c. Cherry Red or Bright Pink d. Red Glucose, Sucrose and Lactose are a. substrates for amino acid fermentation b. substrates for carbohydrate fermentation c. substrates...
Test Purpose Reagents Observation Results Gram To determines the identify the bacteria as a gram positive...
Test Purpose Reagents Observation Results Gram To determines the identify the bacteria as a gram positive or a gram negative. Crystal violet, iodine, Alcohol ,safranin Pink rods Gram negative rods Oxidase To determine the presence of cytochrome oxidase enzyme . Oxidase paper Lactose To determine if the bacteria can ferment carbohydrate . None Indole Test To determine the bacteria’s ability to decompose amino acid tryptophane to indole. Kovac added to1ml of trypotone broth Optimum Temp To determine the bacteria’s ability...
aeruginosa 4. Which families of organisms are differentiated by the Oxidase test? What reagent is used...
aeruginosa 4. Which families of organisms are differentiated by the Oxidase test? What reagent is used to test for Oxidase? 5. Which families of organisms are differentiated by the Catalase test? What is a positive test for catalase? 6. What substrate is used to test for the presence of the Coagulase enzyme? What does Coagulase do for a bacteria that has it?
What does a positive result of a bacterial "catalase" test look like? What's in it that...
What does a positive result of a bacterial "catalase" test look like? What's in it that makes it look like so? Select one: O a. The small clump of bacteria appear at the bottom of the tube of test broth. The color of the broth turns deep red, showing acidic substance is being secreted by the bacteria b. The small clump of bacteria makes bubbles/ foams, and it is oxygen gas that's in the bubbles O c. The agar turns...
Which one of the following tests are similar to one another because they indicate that bacteria...
Which one of the following tests are similar to one another because they indicate that bacteria that can produce exoenzymes? a) DNAse and tryptophanase b) Lipase and DNase c) decarboxylase and casease d) lipase and oxidase If bacteria can make oligo 1,6 gucosidase it is also expressing....................... and you will need................. to prove it. a) DNAse, methyl red b) amylase, iodine c) Tryptophanase, iron d) casease, and no indicator I can ferment glucose and can grow in anaerobic environment via...
The results for a blood test for a certain disease are shown. Blood Test Sick POS...
The results for a blood test for a certain disease are shown. Blood Test Sick POS NEG Total Yes 34 5 39 No 1025 3795 4820 Total 1059 . 3800 4859 a. Estimate the probability that the sickness occurs. b. Find the estimated (i) sensitivity P(POS|Yes), (ii) specificityP(NEG|No). c. Find the estimated (i) P(Yes|POS), (ii) P(Yes| NEG) d. Explain how the probabilities in parts b and c give four ways of describing the probability that a diagnostic test makes a...
8. An isolate of Streptococcus found to be sensitive to O positive for bile solubility test...
8. An isolate of Streptococcus found to be sensitive to O positive for bile solubility test is likely ptochin after incubation on blood agar plate and A. B. Streptococcus pyogenes C. Viridans Streptococcus D. Streptococcus pneumoniae E. Group D enteric Streptococcus treptococcus 9. Which of these test reactions will produce alkaline end products? A. Nitrate reduction and Oxidase tests B. Amylase activity and Lipase activity tests C. Methyl red and Voges Proskauer tests D. Citrate Utilization and Urease tests E....
why does this positive test turn blue? Negative Positive Select one: O a. O2 reacted with...
why does this positive test turn blue?
Negative Positive Select one: O a. O2 reacted with Na+ in media to Na03 O b. CO2 reacted with Na+ in media to NaCO3 OC. CO2 reacted with Na+ in media to NH3 O d. CO2 reacted with Na+ in media to Naci What does the "T" in SIM-test mean? What bacterial process does it test? Select one: O a. I = immobility. This test shows whether bacteria are motile or not. O...
What is the enzyme that is responsible for this positive test result? Select one: a. Cytochrome Oxidase b. Catalase c. Gelatinase d. Proteinase
The results of the following unknown bacteria sample would be: A B. Select one: a. Oxidase positive and catalase positive b. Oxidase negative and catalase positive c. Oxidase positive and catalase negative d. Oxidase negative and catalase negative
aeruginosa 4. Which families of organisms are differentiated by the Oxidase test? What reagent is used to test for Oxidase? 5. Which families of organisms are differentiated by the Catalase test? What is a positive test for catalase? 6. What substrate is used to test for the presence of the Coagulase enzyme? What does Coagulase do for a bacteria that has it?
What does a positive result of a bacterial "catalase" test look like? What's in it that makes it look like so? Select one: O a. The small clump of bacteria appear at the bottom of the tube of test broth. The color of the broth turns deep red, showing acidic substance is being secreted by the bacteria b. The small clump of bacteria makes bubbles/ foams, and it is oxygen gas that's in the bubbles O c. The agar turns...
8. An isolate of Streptococcus found to be sensitive to O positive for bile solubility test is likely ptochin after incubation on blood agar plate and A. B. Streptococcus pyogenes C. Viridans Streptococcus D. Streptococcus pneumoniae E. Group D enteric Streptococcus treptococcus 9. Which of these test reactions will produce alkaline end products? A. Nitrate reduction and Oxidase tests B. Amylase activity and Lipase activity tests C. Methyl red and Voges Proskauer tests D. Citrate Utilization and Urease tests E....
why does this positive test turn blue?
Negative Positive Select one: O a. O2 reacted with Na+ in media to Na03 O b. CO2 reacted with Na+ in media to NaCO3 OC. CO2 reacted with Na+ in media to NH3 O d. CO2 reacted with Na+ in media to Naci What does the "T" in SIM-test mean? What bacterial process does it test? Select one: O a. I = immobility. This test shows whether bacteria are motile or not. O...
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