1. Human beings are: A. photoautotrophs . B. photoheterotrophs. C. chemolithoaut
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1. Human beings are: A. photoautotrophs. B. photoheterotrophs. C.chemolithoautotrophsD.chemoorganoheterotrophs 2. You want to test the presence of small amounts of microbes in a large volume of water. The best method is: * A. Direct cell counts. B. Viable cell counts by serial dilution. C. Membrane filtration followed by growth on an agar plate. D. Turbidity spectrophotometric measurements. Pasteurization is: * A.the total removal of all microorganisms. B. the reduction by heat in number of spoilage organisms and destruction of pathogen. C. the use of long-neck bottles to prove the existence of microorganisms. D. the use of disinfectants on inanimate objects. A common environmental organism that may even grow in certain chemical disinfectants is * A. Escherichia coli. B. Streptococcus pneumoniae. C. Pseudomonas aeruginosa. D. naked virus. An organism called Bacillus fastidiosus * Check all the boxes that apply. might be expected to be very flexible as to growth requirements. might be expected to be very strict as to its growth requirements. would probably be grown on a chemically defined media. might be expected to have a rod shape. Upon treatment with heat or chemicals, bacteria will * A. all die immediately. B. die at a constant proportion. C. die at an exponential rate. D. die at a geometric rate. The endospores of Pseudomonas make that organism very difficult to kill. * A. True. B.False. With the modern techniques of growth and our exquisite knowledge of chemistry, we can successfully grow what percentage of microbes? * A. 99.99% B. 80% C. 50% D. 5% E. < 1% Which of the following organisms are resistant to destruction by typical control methods? * A. endospores of Bacillus and Clostridium. B. Pseudomonas. C. naked viruses. D. Mycobacterium spp. E. All of the choices are correct. The optimal temperature for most human pathogens might be expected to range from * A. 35-40°C. B. 20-25°C. C. 10-15°C. D. 93-98.6°C 1. Human beings are: A. photoautotrophs. B. photoheterotrophs. C.chemolithoautotrophsD.chemoorganoheterotrophs 2. You want to test the presence of small amounts of microbes in a large volume of water. The best method is: * A. Direct cell counts. B. Viable cell counts by serial dilution. C. Membrane filtration followed by growth on an agar plate. D. Turbidity spectrophotometric measurements. Pasteurization is: * A.the total removal of all microorganisms. B. the reduction by heat in number of spoilage organisms and destruction of pathogen. C. the use of long-neck bottles to prove the existence of microorganisms. D. the use of disinfectants on inanimate objects. A common environmental organism that may even grow in certain chemical disinfectants is * A. Escherichia coli. B. Streptococcus pneumoniae. C. Pseudomonas aeruginosa. D. naked virus. An organism called Bacillus fastidiosus * Check all the boxes that apply. might be expected to be very flexible as to growth requirements. might be expected to be very strict as to its growth requirements. would probably be grown on a chemically defined media. might be expected to have a rod shape. Upon treatment with heat or chemicals, bacteria will * A. all die immediately. B. die at a constant proportion. C. die at an exponential rate. D. die at a geometric rate. The endospores of Pseudomonas make that organism very difficult to kill. * A. True. B.False. With the modern techniques of growth and our exquisite knowledge of chemistry, we can successfully grow what percentage of microbes? * A. 99.99% B. 80% C. 50% D. 5% E. < 1% Which of the following organisms are resistant to destruction by typical control methods? * A. endospores of Bacillus and Clostridium. B. Pseudomonas. C. naked viruses. D. Mycobacterium spp. E. All of the choices are correct. The optimal temperature for most human pathogens might be expected to range from * A. 35-40°C. B. 20-25°C. C. 10-15°C. D. 93-98.6°C 1. Human beings are: A. photoautotrophs. B. photoheterotrophs. C.chemolithoautotrophsD.chemoorganoheterotrophs 1. Human beings are: A. photoautotrophs. B. photoheterotrophs. C.chemolithoautotrophsD.chemoorganoheterotrophs 1. Human beings are: A. photoautotrophs. B. photoheterotrophs. C.chemolithoautotrophsD.chemoorganoheterotrophs 1. Human beings are: A. photoautotrophs. B. photoheterotrophs. C.chemolithoautotrophsD.chemoorganoheterotrophs 2. You want to test the presence of small amounts of microbes in a large volume of water. The best method is: * A. Direct cell counts. B. Viable cell counts by serial dilution. C. Membrane filtration followed by growth on an agar plate. D. Turbidity spectrophotometric measurements. 2. You want to test the presence of small amounts of microbes in a large volume of water. The best method is: * A. Direct cell counts. B. Viable cell counts by serial dilution. C. Membrane filtration followed by growth on an agar plate. D. Turbidity spectrophotometric measurements. 2. You want to test the presence of small amounts of microbes in a large volume of water. The best method is: * A. Direct cell counts. B. Viable cell counts by serial dilution. C. Membrane filtration followed by growth on an agar plate. D. Turbidity spectrophotometric measurements. 2. You want to test the presence of small amounts of microbes in a large volume of water. The best method is: * A. Direct cell counts. B. Viable cell counts by serial dilution. C. Membrane filtration followed by growth on an agar plate. D. Turbidity spectrophotometric measurements. Pasteurization is: * A.the total removal of all microorganisms. B. the reduction by heat in number of spoilage organisms and destruction of pathogen. C. the use of long-neck bottles to prove the existence of microorganisms. D. the use of disinfectants on inanimate objects. Pasteurization is: * A.the total removal of all microorganisms. B. the reduction by heat in number of spoilage organisms and destruction of pathogen. C. the use of long-neck bottles to prove the existence of microorganisms. D. the use of disinfectants on inanimate objects. Pasteurization is: * A.the total removal of all microorganisms. B. the reduction by heat in number of spoilage organisms and destruction of pathogen. C. the use of long-neck bottles to prove the existence of microorganisms. D. the use of disinfectants on inanimate objects. Pasteurization is: * A.the total removal of all microorganisms. B. the reduction by heat in number of spoilage organisms and destruction of pathogen. C. the use of long-neck bottles to prove the existence of microorganisms. D. the use of disinfectants on inanimate objects. A common environmental organism that may even grow in certain chemical disinfectants is * A. Escherichia coli. B. Streptococcus pneumoniae. C. Pseudomonas aeruginosa. D. naked virus. A common environmental organism that may even grow in certain chemical disinfectants is * A. Escherichia coli. B. Streptococcus pneumoniae. C. Pseudomonas aeruginosa. D. naked virus. A common environmental organism that may even grow in certain chemical disinfectants is * A. Escherichia coli. B. Streptococcus pneumoniae. C. Pseudomonas aeruginosa. D. naked virus. A common environmental organism that may even grow in certain chemical disinfectants is * A. Escherichia coli. B. Streptococcus pneumoniae. C. Pseudomonas aeruginosa. D. naked virus. An organism called Bacillus fastidiosus * Check all the boxes that apply. might be expected to be very flexible as to growth requirements. might be expected to be very strict as to its growth requirements. would probably be grown on a chemically defined media. might be expected to have a rod shape. An organism called Bacillus fastidiosus * Check all the boxes that apply. An organism called Bacillus fastidiosus * Check all the boxes that apply. An organism called Bacillus fastidiosus * Check all the boxes that apply. might be expected to be very flexible as to growth requirements. might be expected to be very strict as to its growth requirements. would probably be grown on a chemically defined media. might be expected to have a rod shape. might be expected to be very flexible as to growth requirements. might be expected to be very flexible as to growth requirements. might be expected to be very flexible as to growth requirements. might be expected to be very flexible as to growth requirements. might be expected to be very flexible as to growth requirements. might be expected to be very strict as to its growth requirements. might be expected to be very strict as to its growth requirements. might be expected to be very strict as to its growth requirements. might be expected to be very strict as to its growth requirements. might be expected to be very strict as to its growth requirements. would probably be grown on a chemically defined media. would probably be grown on a chemically defined media. would probably be grown on a chemically defined media. would probably be grown on a chemically defined media. would probably be grown on a chemically defined media. might be expected to have a rod shape. might be expected to have a rod shape. might be expected to have a rod shape. might be expected to have a rod shape. might be expected to have a rod shape. Upon treatment with heat or chemicals, bacteria will * A. all die immediately. B. die at a constant proportion. C. die at an exponential rate. D. die at a geometric rate. Upon treatment with heat or chemicals, bacteria will * A. all die immediately. B. die at a constant proportion. C. die at an exponential rate. D. die at a geometric rate. Upon treatment with heat or chemicals, bacteria will * A. all die immediately. B. die at a constant proportion. C. die at an exponential rate. D. die at a geometric rate. Upon treatment with heat or chemicals, bacteria will * A. all die immediately. B. die at a constant proportion. C. die at an exponential rate. D. die at a geometric rate. The endospores of Pseudomonas make that organism very difficult to kill. * A. True. B.False. The endospores of Pseudomonas make that organism very difficult to kill. * A. True. B.False. The endospores of Pseudomonas make that organism very difficult to kill. * A. True. B.False. The endospores of Pseudomonas make that organism very difficult to kill. * A. True. B.False. With the modern techniques of growth and our exquisite knowledge of chemistry, we can successfully grow what percentage of microbes? * A. 99.99% B. 80% C. 50% D. 5% E. < 1% With the modern techniques of growth and our exquisite knowledge of chemistry, we can successfully grow what percentage of microbes? * A. 99.99% B. 80% C. 50% D. 5% E. < 1% With the modern techniques of growth and our exquisite knowledge of chemistry, we can successfully grow what percentage of microbes? * A. 99.99% B. 80% C. 50% D. 5% E. < 1% With the modern techniques of growth and our exquisite knowledge of chemistry, we can successfully grow what percentage of microbes? * A. 99.99% B. 80% C. 50% D. 5% E. < 1% Which of the following organisms are resistant to destruction by typical control methods? * A. endospores of Bacillus and Clostridium. B. Pseudomonas. C. naked viruses. D. Mycobacterium spp. E. All of the choices are correct. Which of the following organisms are resistant to destruction by typical control methods? * A. endospores of Bacillus and Clostridium. B. Pseudomonas. C. naked viruses. D. Mycobacterium spp. E. All of the choices are correct. Which of the following organisms are resistant to destruction by typical control methods? * A. endospores of Bacillus and Clostridium. B. Pseudomonas. C. naked viruses. D. Mycobacterium spp. E. All of the choices are correct. Which of the following organisms are resistant to destruction by typical control methods? * A. endospores of Bacillus and Clostridium. B. Pseudomonas. C. naked viruses. D. Mycobacterium spp. E. All of the choices are correct. The optimal temperature for most human pathogens might be expected to range from * A. 35-40°C. B. 20-25°C. C. 10-15°C. D. 93-98.6°C The optimal temperature for most human pathogens might be expected to range from * A. 35-40°C. B. 20-25°C. C. 10-15°C. D. 93-98.6°C The optimal temperature for most human pathogens might be expected to range from * A. 35-40°C. B. 20-25°C. C. 10-15°C. D. 93-98.6°C The optimal temperature for most human pathogens might be expected to range from * A. 35-40°C. B. 20-25°C. C. 10-15°C. D. 93-98.6°CExplanation / Answer
Answer-(1) d, Human beings are chemoorganoheterotroph because food we take is animal or plant origin .we obtain energy breaking organic chemical from cell.
(2)B - best ways to test presence of microbe in large volume of water by counting cells by serial dilution.
(3)pasteurization is the process for the reduction of spoilage organismby heat.
(4)C - pseudomonas aueroginosa is highly resistant organism can grow on disenfactant . Can grow on phenol.
(6)C- on treatment with heat or chemical bacteria die at exponantial rate because chemicals kill bacteria again spore germinate which are again killed.
(7) True because it makes organism to survive in unfavourable environment .
(8)D- less than 1% bacteria Can be cultured . Many reasons are behind this.some bacteria uncapable in replication in artificial media, some bacteria cannot grow in such high oxygen concentration.
(9)E- among these options all are highly resistant organism because of there genetic makeup which enable them to survive in hostile environment.
(10) A- most of bacteria survive in this range of temperature because most of enzymes / protein are active in this range which is responsible for growth.
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