![#5 [2 pts] A scientist working for the MDEQ measured the amount of bacteria present in a surface water sample. According to t](http://img.homeworklib.com/questions/610f0a00-e06c-11eb-9ece-0f3c3fcc59d5.png?x-oss-process=image/resize,w_560)
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According to the report, the water sample contains 3,600 MPN/100 ml total coliform and 56,700 MPN/100ml E.coli bacteria. First of all, we should know that E.coli is the only membrane of total coliform (TC)group of bacteria that are found in mammals intestine. The presence of E.coli in water indicates that water is polluted or contaminated while TC (except E.coli) regularly present in the environment water but it does not indicate water is contaminated. So scientists count total coliform (TC) and E.coli bacteria separately. So I have trust in this report presented by MDEQ Scientist and this report indicates that water is contaminated.
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#5 [2 pts] A scientist working for the MDEQ measured the amount of bacteria present in...
A scientist working for the MDEQ measured the amount of bacteria present in a surface water...
A scientist working for the MDEQ measured the amount of bacteria present in a surface water sample. According to the scientist, the sample contains 3,600 MPN/100 mL total coliform and 56,700 MPN/100 E. coli. Can you trust the results? Explain your answer.
Food Microbiology Laboratory question, **********Question********** (PLease help me to figure out the answers after reading/ using...
Food Microbiology Laboratory question,
**********Question********** (PLease help me to figure out the
answers after reading/ using following text, thx a lot)
1. Deeply analyse and explain the
result of this lab (results is provide in the following
text)
---------------------
Laboratory: Microbiological analysis of food products
(3M Petrifilm E.coli/Coliform (EC) count
plate)
Used media:3M Petrifilm E.coli/Coliform (EC) count plate
3M EC count plates are designed to identify both E. coli and
other coliforms. It contains crystal violet and bile salt which...
Refer to the following paragraph to answer questions 6-11. quantities. W teria E. Coli can cause...
Refer to the following paragraph to answer questions 6-11. quantities. W teria E. Coli can cause serous gastrointestinal problems if ingested in large of volume. W area. At each ater is considered safe if it contains less than 130 E. Coli per 100 milliliters (mL) ater was tested at a random sample of 20 locations around a popular swimming location, the number of Coli present per 100 mL was measured to determine if the water was safe.
7. (20 pts) A scientist has 100 mL of a solution that contains four metal ions,...
7. (20 pts) A scientist has 100 mL of a solution that contains four metal ions, Ca2, Cu2, Pb2, and K*. He takes 50 mL and adds 2.5 grams of Na2SO4 which precipitates the Ca2 and the Pb2. This precipitate is filtered form the solution and redissolved in 20 mL of 6 M HNO3. He then adds 20 mL of 1.005 M EDTA and back titrates with 23.54 mL of 0.1954 M Zn2 He then adds a masking agent that...
Now knowing the MPN value, you decide to do a dilution series in order to figure...
Now knowing the MPN value, you decide to do a dilution series in order to figure out the original bacterial concentration of the Swimming Hole, just in case it is not a coliform causing the gastric distress and simply a bacterial overgrowth. You perform the following dilution set: from your 16.3-liter Swimming Hole sample you transfer 10.7 x 10-3 liters into container A which has a volume of 6,250ul, you then transfer 1.7 mL from container A into container B...
Question 2: (15 pts) To determine the relationship between the amount of precipitation and the number...
Question 2: (15 pts) To determine the relationship between the amount of precipitation and the number of trees that grow in area, an ecologist has recorded the yearly rainfall x (mm) and the amount of ground covered by tree (measured on a scale from 49.6,sy -7.1. The sample correlation between x and y is 0.673. to 100) for 49 locations. In this sample, 1182.4,S 226.9,5 a) Calculate the regression equation (5 pts) Can we conclude that the tree cover depends...
A. You have been given a tube of E. coli. You are asked to make 1...
A. You have been given a tube of E. coli. You are asked to make 1 mL total volume of 10-1 dilution of the bacterial culture. Explain how you would do this. Show all necessary calculations. ____ ml cells + _____ ml water = 1 ml (total volume) B. Next, you were asked to make a 10-2 dilution of the bacterial sample. Explain how you would perform this. Show all necessary calculations. You have bacteria at a concentration of 2...
Lab Report Guide: - 1. Results (4 pts) o Tables neatly filled out with data o ...
Lab Report Guide: - 1. Results (4 pts) o Tables neatly filled out with data o Proper significant figures o Legible sample calculations - 2. Error Analysis (4 pts) o Determination of percent error (for glassware and metal densities) o Typed discussion of measured results vs literature results and description of possible sources of error. Note that “human error” is not an acceptable answer. Please be specific. - 3. Post Lab Questions (4 pts) o Hand written answers to the...
LAB Genetic Engineering of Bacteria Problem Is it possible to transfer the allele for resistance to...
LAB Genetic Engineering of Bacteria Problem Is it possible to transfer the allele for resistance to the antibiotic ampicillin into a bacterial cell? Objectives After completing this lab, the student will be able to: 1. Demonstrate micropipetting and sterile pipetting techniques for handling and transferring bacteria and plasmid DNA. 2. Maintain sterile conditions for culturing bacterial cells. 3. Inoculate bacteria into flasks, culture tubes, or agar plates. 4. Culture isolated individual colonies from an agar plate to form genetically identical...
microbiology help TOT Zoo Add Page Insert Table Chart Text Shape Media Comment These questions will...
microbiology help
TOT Zoo Add Page Insert Table Chart Text Shape Media Comment These questions will serve in lieu of a lab report for Exercise 15, 16, and 17 You will find the answer to these questions in the background, procedure, results and interpretation sections of manual Exercise 15, 16, and 17, videos, Actions of Selective and Differential Media Chart, and the Principle/Theory article in homework section.) General Questions 1. What is the purpose (function) of selective media? (How does...
Food Microbiology Laboratory question,
**********Question********** (PLease help me to figure out the
answers after reading/ using following text, thx a lot)
1. Deeply analyse and explain the
result of this lab (results is provide in the following
text)
---------------------
Laboratory: Microbiological analysis of food products
(3M Petrifilm E.coli/Coliform (EC) count
plate)
Used media:3M Petrifilm E.coli/Coliform (EC) count plate
3M EC count plates are designed to identify both E. coli and
other coliforms. It contains crystal violet and bile salt which...
Refer to the following paragraph to answer questions 6-11. quantities. W teria E. Coli can cause serous gastrointestinal problems if ingested in large of volume. W area. At each ater is considered safe if it contains less than 130 E. Coli per 100 milliliters (mL) ater was tested at a random sample of 20 locations around a popular swimming location, the number of Coli present per 100 mL was measured to determine if the water was safe.
7. (20 pts) A scientist has 100 mL of a solution that contains four metal ions, Ca2, Cu2, Pb2, and K*. He takes 50 mL and adds 2.5 grams of Na2SO4 which precipitates the Ca2 and the Pb2. This precipitate is filtered form the solution and redissolved in 20 mL of 6 M HNO3. He then adds 20 mL of 1.005 M EDTA and back titrates with 23.54 mL of 0.1954 M Zn2 He then adds a masking agent that...
Now knowing the MPN value, you decide to do a dilution series in order to figure out the original bacterial concentration of the Swimming Hole, just in case it is not a coliform causing the gastric distress and simply a bacterial overgrowth. You perform the following dilution set: from your 16.3-liter Swimming Hole sample you transfer 10.7 x 10-3 liters into container A which has a volume of 6,250ul, you then transfer 1.7 mL from container A into container B...
Question 2: (15 pts) To determine the relationship between the amount of precipitation and the number of trees that grow in area, an ecologist has recorded the yearly rainfall x (mm) and the amount of ground covered by tree (measured on a scale from 49.6,sy -7.1. The sample correlation between x and y is 0.673. to 100) for 49 locations. In this sample, 1182.4,S 226.9,5 a) Calculate the regression equation (5 pts) Can we conclude that the tree cover depends...
LAB Genetic Engineering of Bacteria Problem Is it possible to transfer the allele for resistance to the antibiotic ampicillin into a bacterial cell? Objectives After completing this lab, the student will be able to: 1. Demonstrate micropipetting and sterile pipetting techniques for handling and transferring bacteria and plasmid DNA. 2. Maintain sterile conditions for culturing bacterial cells. 3. Inoculate bacteria into flasks, culture tubes, or agar plates. 4. Culture isolated individual colonies from an agar plate to form genetically identical...
microbiology help
TOT Zoo Add Page Insert Table Chart Text Shape Media Comment These questions will serve in lieu of a lab report for Exercise 15, 16, and 17 You will find the answer to these questions in the background, procedure, results and interpretation sections of manual Exercise 15, 16, and 17, videos, Actions of Selective and Differential Media Chart, and the Principle/Theory article in homework section.) General Questions 1. What is the purpose (function) of selective media? (How does...
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