Biology, 12.10.2019 06:10 mariahv105
Astudent placed a disk of filter paper in each of the following solutions: disinfectant 1, disinfectant 2, disinfectant 3, and distilled water. while the four disks were soaking in their respective solutions, she streaked a sterile nutrient agar dish with a culture of e. coli bacteria. then, she placed each disk carefully onto the nutrient agar dish, placed the lid on the dish, taped it shut, and incubated the dish at 37°c for several days. the diagram shows how the nutrient agar dish looked on day 1 and day 4. the shaded portion of the plate on day 4 indicates the bacterial growth. what is the control in the experiment?
a. disk soaked in disinfectant 1
b. disk soaked in disinfectant 3
c. disk soaked in disinfectant 2
d. disk soaked in distilled water
Answers: 2
Biology, 21.06.2019 19:00, Marmama23
Select the correct answer. which scenario describes unethical lab behavior? o a. danny stores the chemicals required for his experiment in flasks and beakers. b.anna publishes the results of her experiment on the growth rate of saplings. c.jason repeatedly runs an experiment until he gets the results he desires. d. mia records her observations of an experiment precisely and accurately.
Answers: 1
Biology, 21.06.2019 22:30, lillitzy8865
How do tides affect the organisms living in intertidal zones? a. no organisms live in intertidal zones due to the tumultuous environment. b. the mechanical forces of the waves keeps the organisms clean. c. only plants live in intertidal zones because the animals float away with the waves and never return. d. the mechanical forces of the waves can dislodge the organisms from their habitat.
Answers: 2
Astudent placed a disk of filter paper in each of the following solutions: disinfectant 1, disinfec...
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