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- Proteus vulgaris has a doubling time of roughly 28 minutes. If an initial population of 500 cells is allowed to grow for 6 hours in ideal conditions, what will be the final population? Use three significant figures for your final answer (e.g. 16,796.654 would become 16,800).4/variants/410004/take/12/ MULTIPLE CHOICE Question 18 Why are bacteria essential to the nitrogen cycle? Bacteria break down rocks to release nitrogen into the soil. B. Bacteria convert nitrogen gas into a form that living things can use. C. Bacteria attract animals to the plants they eat for food. D. Bacteria kill off weak plants by giving them diseases. MULTIPLE CHOICE Question 19 The diagram below depicts the phosphorus cycle. Which of the processes from the dia- gram releases phosphorus for living things to use? edAn unknown concentration of ‘LD’ disinfectant killed 106 viable cells of Sporotrichum schenkii within a certain time. When the concentration was increased 2-fold the extinction time decreased a 103-fold. Determine the concentration exponent of this disinfectant.
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- a. For an exponentially growing population, calculate μmax (units?) based on the data belowb. Calculate the specific growth rate (μ) of the population above growing at a substrate concentration of 25 mg/L according to Monod kinetics with a ks of 50 mg/L.c. Consider two genetically engineered organisms intended for use in the cleanup of hydrocarbon spills into the ocean. Bacterium alpha has a μmax of 1 d-1 and a ks of 0.1 mg/L. Bacterium beta has a μmax of 5 d-1 and a ks of 5 mg/L. If the hydrocarbon concentration is initially 1000 mg/L and the desired objective is to reduce concentrations below 0.1 mg/L what order of addition of the bacterial species is desired?DATA Record all masses to the maximum number of Run 1 Run 2 sig figs 200°C 400°C 1. Mass of beaker 81.061 27.986 2. Mass of beaker + NaHCO3 85.457 32.267 3. Initial mass of NaHCO3 4.476 4.292 Mass of beaker plus products after heating. 4. 84.3 80 30.742 5. Mass of product (actual yield) There are three theoretically possible chemical reactions that could occur during the thermal decomposition of baking soda. 1) sodium bicarbonate (s) → sodium hydroxide (s) + carbon dioxide (g) 2) sodium bicarbonate (s) → sodium oxide (s) + carbon dioxide (g) + water (g) 3) sodium bicarbonate (s)→ sodium carbonate (s) + carbon dioxide (g) + water (g)* 0O 100 v Ao you would use to identify this species (what features would you use personally to ID). ^タヘ三 臣ヘ= 5. View the protists blood parasites (Trypanosoma cruzi, Trypanosoma brucei, and Plasmodium vivax). Which of these species is more likely to cause the most human issues (in terms of number of people with the disease)? What is one of the most likely ways to keep from being infected by any of these blood parasites? Explain. 6. What are slime molds? 7. Identify the organisms below. Next to each name you ID the organism as, give 2 features that helped you come to that determination. Name of organism: a. Features used to ID: 771 words English (U.S.) Text Predictions: On DEOL 8. ca上門后 MacBook Air 71 64 000 F4 F5 F6 F8 F2 F3 23 2$ 5. 6. 4. R.