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- 1.1 Microbes in the soil could be beneficial to plants and one way to evaluate this is by determining the R/S ratio. Define the R/S ratio. 1.2 Both rhizospheric and root-free soils were collected from five (5) plants before (BT) and after (AT) treatment. Using the microbial biomass that appear in Table 1, the R/S ratios before (BT) and after (AT) can be determined. Use these values to determine the respective R/S ratios. Kindly show all workings. Microbial population Before Treatment (BT) Plants R/S Microbial population After Treatment (AT) R/S ratio ratio (BT) (AT) Rhizospheric Non- soil (CFU) Rhizospheric Non- rhizospheric soil (CFU) soil (CFU) rhizospheric soil (CFU) Typha sp. 764 168 988 186 Pistia sp. 286 86 386 112 Salvinia 397 132 528 166 sp. Lemna sp. 274 121 406 152 Eichhornia 443 140 648 196 sp.Batch culture time prediction: A strain of Escherichia coli has been genetically modified to produce human protein. A batch culture is started by inoculating 12 g of cells into a 100 liters bubble column fermenter containing 10 g/l glucose. The culture does not exhibit a phase lag. The maximum specific growth rate of the cells is 0.9 h^-1, the glucose biomass yield is 0.575 g/g. Estimate the time required to reach the stationary phase.Form of energy Kcal/m^2/yr Efficiency of energy transfer (%) Sunlight 600 000 n/a Chemical energy in producers 6 585 Chemical energy in primary consumers 81 Calculate the efficiency of energy transfer by the producers. That is, what percentage of the energy in sunlight was converted into chemical energy and incorporated into plant biomass? Calculate the efficiency of energy transfer by the primary consumers. What percentage of the energy in plant biomass was incorporated into the bodies of the primary consumers? What became of the rest of the energy? How much energy is available for secondary consumers? Based on the efficiency of energy transfer by primary consumers, estimate how much energy will be available to tertiary consumers. Draw a pyramid of production for the producers, primary consumers, and secondary consumers for this ecosystem (see example in your textbook).
- RESULTS Please give the time-absorbance values tab? Draw graph-growth curve in Excel? Find the equation of slope line? Calculate the generation time? Choose the values in log phase Abs 0.005 25 0.003 50 0.023 75 0.026 100 0.029 125 0.035 150 0.1 175 0.26 200 0.32 225 0.375 250 0.42 275 0.46 300 0.475 325 0.489 350 0.506 375 0.515 400 0.521 425 0.526 450 0.532 475 0.522 500 0.515 525 0.514 550 0.506 575 0.489 600 0.465 625 0.42 650 0.38 675 0.36 700 0,345 725 0.333 BACTERIAL GRO WTH CURVEExplain the metabolic changes found in denitrifiers, compared to microorganisms doing aerobic respiration, and the consequence of denitrification for agricultural soils.MECHANICAL PROPERTIES OF AGRICULTURAL AND BIOLOGICAL MATERIALS Enumerate and discuss the different methods of determining/measuring thegrains and fruits and vegetables properties and their applications to postharvest handling (you may include results from various studies/ researches).
- Chimeln - Lecture 8 Feb 10/14 Folder Settings + Add Question MULTIPLE CHOICE When plants are fertilized with sufficient amounts of ammonium which of the followin correct. A. Plant will use less energy synthesizing N-containing compounds than they would if r N source. B. Plant will decrease the use of other forms of N C. Nitrate reductase and nitrite reductase activity will be low D. All of the above E. None of the above MULTIPLE CHOICE Plants only signal their identity when bacteria that can establish an N-fixing symbiosis their roots. A. True B. Falseand from there to the environment. Try to visit a local sewage treatment plant to see what it does with wastewater. Compare the processes it uses with those shown in Figure 11.31. What happens to the sludge produced by this plant? What improvements, if a any, would you suggest for this plant?wd da ils2st 8. Congratulations! You are in charge of the world. What are three actions you would take to (a) sharply reduce point-source water pollution in more-devel- oped countries, (b) sharply reduce nonpoint-source water pollution throughout the world, (c) sharply reduce groundwater pollution throughout the world, and (d) provide safe drinking water for the poor and for other people in less-developed countries? u- d. What problems related to drinking water, if any, I arisen in your community? What actions, if any, I your local government taken to solve such problems? e. Is groundwater contamination a problem? If so, where, and what has been done about the problem? have ns: hasPrepare a 250 kg grower ration with 17.5% CP using rice bran (13% CP) and soybean oil meal (49% CP). Assume a fixed ingredient of 3% for vitamins and mineral supplement.
- uginfile.php/7376125/mod_resource/content/0/Nitrogen%20Disposal%20%20Urea%.. tice Pathwa... 1/ 1 67% Nitrogen MUSÇLE Area CyckePoralF » pyruvate E9 glutamine tissues HVER pýruvate glutamate- El -oxalvacetate E8 E2 CAC E3 mitachondria ET ES Eb cytosol O O QA surface water treatment plant operates round the clock with a flaw rate of 35 m3/min. The water temperature is 15°C and Jar testing indicated and alum dosage of 25 mg/l with flocculation at a Gt value of 4 x 104 producing optimal results. The alum quantity required for 30 days (in kg) of operation of the plant is} Problem #1: Batch Fermentation Assuming the batch fermentation is conducted under the following conditions: Mm maximum specific growth rate = 1.0/hr KM Monod constant = 20 g/l Yx/s = yield coefficient for cell mass/substrate consumed = 0.4 g/g initial cell mass concentrate = 0.1 g/l Xo So initial substrate concentration = 20 g/l Yxo yield coefficient for cell mass/mass oxygen consumed = 1.0 g/g Po initial product concentration = 0 g/g BYP/x-yield coefficient for product/cell mass, (for product is growth associated) = 0.2 g/g/hr www. - wwwww = www. Ttotal total hours for the fermentation cycle = 20 hr. wwww Plot the fermentation history curves (i.e. X, S, P and Oxygen Uptake Rate (OUR), v.S. time)