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- After performing a plate and liquid lysate, it was found that the plate lysate achieved the common titre range of 1010-1011 pfu/ml whereas the liquid lysate achieved a range of 108 PFU/mL; what is the reason for the lower titre in different methodologies? How can we troubleshoot this issue in the future?The following are errors that people commonly make when they perform serial dilutions. Indicate whether you think that the number of cfu/ ml calculated would be too high or too low if you make this mistake. You intend to add 0.9 ml of diluent to each tube and 0.1 ml of culture. Instead, you add 0.5 ml of diluent to each tube and 0.1 ml of culture to the first tube. Then, you make a serial dilution of 0.1 ml into and from each tube as described. You prepare 0.9 ml of diluents in each tube. You add 0.1 ml of culture (from the overnight culture provided) to every tube. You add 0.9 ml of diluent to each tube. You add 0.1 ml of culture to the first tube and mix. You get distracted, and transfer 0.1 ml to the third tube instead of the second. You perform the rest of the series as described.Below is a diagram of the serial dilution of a culture with 1 x 10º cells. Fill out the missing information. 250 Culture Diluent 1 x 10° cells/mL 9 mL 9 mL 9.9 mL 9.9 mL 99.9 mL Volume to add to diluent Final Dilution level Theoretical count after plating 100 uL
- The following image is a scheme for serial dilutions prepared for spectrophotometric analysis. If the stock solution concentration is 0.05 % (v/v) can you calculate the other tube’s concentrations in % v/v? I've used this with direct dilutions, how would I use this on serial dilutions?blackboardcdn.com/5bfc08ba3fldc/14683296?X-Blackboard-Expiration=16245468000008X-Blackboard- 19 / 47 100% 1.4. Functions of the light mlcroscope parts Complete the following table by writing the function(s) of each of the parts indicated. Structure Function Diaphragm / iris Stage opehing Lamp Objective lenses Eye piece Coarse and find adjustment knobs Stage Stage rack prt sc delete home backspace lock enter pause t shiftProvided with the following data, compute the corresponding CFU/ml of the original culture. ssume that spread plate technique was done. Show your solutions. 10-1 10-2 10-3 10-4 10-5 Plate 1 TNTC 340 132 45 19 Plate 2 TNTC TNTC 242 80 25 Plate 3 TNTC 280 90 22
- Provided with the following data, compute the corresponding CFU/ml of the original culture. Assume that spread plate technique was done. Show your solutions. 10-1 10-2 10-3 10-4 10-5 Plate 1 TNTC 340 132 45 19 Plate 2 TNTC TNTC 242 80 25 Plate 3 TNTC 280 90 22 2Determine what percentage of the culture was living (viable) and what percentage was dead (mortality). Plates Plate Dilution Volume plated No.of colonies Avg No Concentration of diluted sample Cd(cells/mL) Concentration of original sample Cu(cells/mL) 1 10^-3 10ul R1=130,R2= 110,R3=210 150 150mL 1.50*10^6 Volume of cells(mL) Volume of diluent(mL) Total dilution(D) Hemocytometer count Avg cells in 1 mm^2 area Concentration of diluted sample Cd(cells/mL) Concentration of original sample Cu(cells/mL) 4.3 0.5 0.1 grid 1= 171 , grid2 = 185 178 1.78*10^5 1.78*10^6How much of 10,000x SYBR safe would you add to 50 ml to make a final concentration of 1x? V1= 0.005mL B.How will you set up the serial dilution? How many tubes do you need? What is the concentration in each? How much LB will you add to each tube? What volume of cells will you add?
- Given: The used ocular objective while taking this image, has magnifying power of 6x The used objective while taking this image, has a magnifying power of 100x The used stage micrometer has spaces graduation of 01 mm each Ten (10) graduations pn the ocular micrometer conincided with two (2) graduations on the stage micrometer Question: What is the distance of one ocular division? Show your solution.Andrew has to prepare 30 plates (use maximum volume), 15 slants (small test tube), and 15 stabs (big test tube) of Luria Bertani Agar. a. What is the total volume of the medium needed? b. What is the amount of each component needed, given the following media composition per liter of distilled water:The number of cells in a culture is estimated based on turbidity. If the following standards are used for comparison: Number of cells/mL Optical Density (measure of turbidity) 0.025 0.050 000'000'৮ 000 000'000' కరరక How many cells are present in a culture that has an optical density of 0.075? O A. Less than 1,000,000 O B. Between 2,000,000 and 4,000,000 O C. 16,000,000 O D. Between 4,000,000 and 8,000,000 Reset Selection