Homework Answers
1. Because the bottom of the slant is yellow and the top portion is red, the substrate fermented is glucose. If lactose was fermented then the whole slant will be in yellow color. Hence the correct answer is: glucose.
2. H2S is being produced in the slant which is indicated by the black precipitate formed in the slant. Hence the correct answer is: H2S.
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5) What substance in this triple sugar iron agar was catabolized to produce...
Please answer all 31) What substance in this phenol red dextrose fermentation tube was catabolized to...
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31) What substance in this phenol red dextrose fermentation tube was catabolized to produce the ( demonstrated colorimetric change? Image gallery (click for full size) B2) What is (most likely) the gas that is trapped in the Durham tube? (1 pts) Image gallery (click for full size)
please answer all (1 29) The bacteria cultured on the left side of this phenol red...
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(1 29) The bacteria cultured on the left side of this phenol red dextrose agar plate metabolically converted what substance in this medium to create the demonstrated colorimetric change? Image gallery (click for full size) (1 30) The bacteria on the right side of this phenol red dextrose agar plate metabolically converted what substance in this medium to create the demonstrated colorimetric change (be specific)? Image gallery (click for full size)
Please answer all (1 pt 27) The two bacteria cultured on this mannitol salt agar plate...
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(1 pt 27) The two bacteria cultured on this mannitol salt agar plate will have the same reaction. One reacted nearly 24 hours before the other. What substance in the agar was catabolized by both bacteria that produced the demonstrated colorimetric change? Image gallery (click for full size) (1pt 28) The presence of bacterial growth on this mannitol salt agar plate suggests that these bacteria can tolerate the hyperosmotic condition produced by the salt. The term used...
Background Background continued... Questions Experiment 2: TSI The triple sugar iron agar (TSI) can identify gram...
Background
Background continued...
Questions
Experiment 2: TSI The triple sugar iron agar (TSI) can identify gram negative bacteria based on how they metabolize carbohydrates. It contains three carbohydrates-glucose, lactose and sucrose, in addition to sodium thiosulfate which some bacteria use in the production of hydrogen sulfide (H2S). It also contains iron in the ferrous form and phenol red as a pH indicator. TSI is poured into a tube when heated to a liquid form, and the tube is slanted as...
Please answer all 3) The bacteria cultured on the surface of this eosin methylene blue agar...
Please answer all
3) The bacteria cultured on the surface of this eosin methylene blue agar plate were selected by a this media. This selection characteristic of this media would suggest that this organism possesses a Gram differential staining characteristic. Image gallery (click for full size) ( 4) Is the bacteria cultured on this EMB agar plate capable of fermenting lactose sugar to an acid and gas? (Yes/No) Image gallery (click for full size)
TSI Triple Sugar Iron Agar Data Sheet The enterics, specifically coliforms, will show what result in...
TSI Triple Sugar Iron Agar Data Sheet The enterics, specifically coliforms, will show what result in the TSI? What is reversion and what organisms showed reversion in the TSI? What does a black color in the butt of the slant indicate in the TSI? What is the pH indicator in the TSI and what is the purpose of the pH indicator? Do all organisms use the sugars in the TSI? What organisms do not utilize the sugars and what is...
please help me. answer only first page. thank you! p. If you accidentally forgot to inoculate...
please help me. answer only first page. thank you!
p. If you accidentally forgot to inoculate your organism in an OF-glucose tube with oil, and only had one yellow “no oil” tube, what type of carbohydrate catabolism would describe that organism (fermenter, oxidative, neither)? Explain your answer. q. What are two other results from the OF-glucose tubes other than their type of carbohydrate catabolism? r. How can organisms that don't use starch grow on a starch agar plate? Carbohydrate Catabolism...
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31) What substance in this phenol red dextrose fermentation tube was catabolized to produce the ( demonstrated colorimetric change? Image gallery (click for full size) B2) What is (most likely) the gas that is trapped in the Durham tube? (1 pts) Image gallery (click for full size)
please answer all
(1 29) The bacteria cultured on the left side of this phenol red dextrose agar plate metabolically converted what substance in this medium to create the demonstrated colorimetric change? Image gallery (click for full size) (1 30) The bacteria on the right side of this phenol red dextrose agar plate metabolically converted what substance in this medium to create the demonstrated colorimetric change (be specific)? Image gallery (click for full size)
Please answer all
(1 pt 27) The two bacteria cultured on this mannitol salt agar plate will have the same reaction. One reacted nearly 24 hours before the other. What substance in the agar was catabolized by both bacteria that produced the demonstrated colorimetric change? Image gallery (click for full size) (1pt 28) The presence of bacterial growth on this mannitol salt agar plate suggests that these bacteria can tolerate the hyperosmotic condition produced by the salt. The term used...
Background
Background continued...
Questions
Experiment 2: TSI The triple sugar iron agar (TSI) can identify gram negative bacteria based on how they metabolize carbohydrates. It contains three carbohydrates-glucose, lactose and sucrose, in addition to sodium thiosulfate which some bacteria use in the production of hydrogen sulfide (H2S). It also contains iron in the ferrous form and phenol red as a pH indicator. TSI is poured into a tube when heated to a liquid form, and the tube is slanted as...
Please answer all
3) The bacteria cultured on the surface of this eosin methylene blue agar plate were selected by a this media. This selection characteristic of this media would suggest that this organism possesses a Gram differential staining characteristic. Image gallery (click for full size) ( 4) Is the bacteria cultured on this EMB agar plate capable of fermenting lactose sugar to an acid and gas? (Yes/No) Image gallery (click for full size)
TSI Triple Sugar Iron Agar Data Sheet The enterics, specifically coliforms, will show what result in the TSI? What is reversion and what organisms showed reversion in the TSI? What does a black color in the butt of the slant indicate in the TSI? What is the pH indicator in the TSI and what is the purpose of the pH indicator? Do all organisms use the sugars in the TSI? What organisms do not utilize the sugars and what is...
please help me. answer only first page. thank you!
p. If you accidentally forgot to inoculate your organism in an OF-glucose tube with oil, and only had one yellow “no oil” tube, what type of carbohydrate catabolism would describe that organism (fermenter, oxidative, neither)? Explain your answer. q. What are two other results from the OF-glucose tubes other than their type of carbohydrate catabolism? r. How can organisms that don't use starch grow on a starch agar plate? Carbohydrate Catabolism...
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