Which best describes a dilution test used to evaluate disinfectant effectiveness? Multiple Choice Disinfectant is placed in a 2mm well on a agar plate that has a lawn of bacteria covering the plate to measure survival. Disinfectant is placed on small paper discs then placed on agar plates containing a lawn of bacteria to measure survival. Microbe-contaminated stainless steel carriers are immersed in a disinfectant for 10 minutes then followed by culturing for enumeration. Serially diluted disinfectants are inoculated with microbes then followed by culturing at various temperatures.
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Biology, 22.06.2019 06:30, dtilton2003
Agroup of students is studying convection currents. they fill two identical balloons with the same amount of helium. one balloon is placed in a freezer and the other in an area with warm air. after 10 minutes, the balloons are released from a height of 1 meter. which of the following do the students most likely observe? question 8 options: the cold balloon expands and rises. the warm balloon shrinks and sinks. the balloons rise at the same rate. both balloons are the same size. the ballons both rise. the cold ballon is larger than the warm balloon. the warm balloon expands and rises. the cold balloon shrinks and sinks.
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Biology, 22.06.2019 17:30, jalenshayewilliams
Label the following as inner or outer planets; a) has 67 moons made mostly of hydrogen and helium b) has rings c)no moons, high volcanic activity d) known as the red planet, has 2 moons e) very thin atmosphere, moons or rings
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Biology, 22.06.2019 18:30, tyshunstephens0
Which of the following are not matched correctly? cd8+: directly destroy infected or cancerous cells t reg cell: reduce the adaptive response once threat passes t l: activate cellular branch (cytotoxic t cells, macrophages, nk cells) t 2: stimulate b cells to make antibodies t (cd4+): mhc i
Answers: 3
Which best describes a dilution test used to evaluate disinfectant effectiveness? Multiple Choice Di...
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