Red blood cells from a healthy individual were placed in each of the following solutions and observations were made after 1 hour. Cells would have most likely have lysed when placed in a. 1.2% NaCl b. 0.9% NaCl c.3.8% NaCl d. 0.3% NaCl
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Red blood cells from a healthy individual were placed in each of the following solutions and observations were made after 1 hour. Cells would have most likely have lysed when placed in
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- A sample is diluted by a factor of 10 five times. The 10^-3 dilution has 272 colonies on it. Assuming you plated the same volume on each plate, how many colonies would you expect to find on the 10^-2 plate? Include units and use OCD formula.Please explain: After making the 1:100 dilution, the laboratory scientist puts both the original serum sample and the labeled 1:100 dilution into the refrigerator. What is the appropriate temperature setting for the refrigerator? Choose the best letter answer and give a brief explanation. A. –10°C to – 15°C B. 1°C to 8°C C. 22°C to 24°C D. 37°CA dosage of 10mg is ordered. The solution strength is 2mg in 1 ml. How many ml will be administered? Round to the nearest tenth.
- I do not understand the results of this experiment, explain what the results of this experiment are and the purpose Table 2 Absorbance vs CoCl2 concentration Test Tube Number Cobalt Chloride Concentration (mol/mL) Absorbance at 510 nm 1 0.000 0.000 2 0.009 0.024 3 0.018 0.055 4 0.027 0.085 5 6 0.036 0.045 0.112 0.138 7 (Unknown) 0.088Which is not a Limit test in the Sodium Chloride drug substance/raw material monograph? (Note: NaCl is used as a drug to counter hypotension (low blood pressure), and as a raw material in saline solution.)The physician has ordered 500,00 units of IV Pfizerpen every 4 hours. How much diluent will you add for a concentration of 500,000 units/mL? How many milliliters will you administer?
- In sterilization, which among the supplies, instruments, glassware, etc. under the list of materials can be sterilized using either or both equipment below? List them down under the category: a) For “autoclaving” only, B) For Dry heat oven sterilization ,And C) Can be sterilized with either. Materials: 200-ml Erlenmeyer flask Stove 500-ml Erlenmeyer flask Autoclave 10-mL graduated cylinder Analytical balance 100-ml graduated cylinder pH meter Spatula Stirring rod 100-mL beaker Test tubes Distilled water Petri dish Stirring rod Alcohol lamp Glass dropperexplain what the results of this experiment are and the purpose Table 2 Absorbance vs CoCl2 concentration Test Tube Number Cobalt Chloride Concentration (mol/mL) Absorbance at 510 nm 1 0.000 0.000 2 0.009 0.024 3 0.018 0.055 4 0.027 0.085 5 6 0.036 0.045 0.112 0.138 7 (Unknown) 0.088A solution is tested with three indicators and it has a pH of 9.8. Identify the colours of the following indicators: alizarin yellow R color:yellow,orange or red thymol blue: yellow,orange,blue or red bromothymol blue: yellow, green or blue
- If there are 103 cells per mL at the middle of log phase, andthe generation time of the cells is 30 minutes, how many cellswill there be 2 hours later?a) 2 x 103b) 4 x 103c) 8 x 103d) 1.6 x 104e) 1 x 107The following are official combinations of electrolyte infusions EXCEPT: Oral Electrolyte Solutions Lactated Ringer’s Injection Ringer’s Injection USP XX Dextrose 5% InjectionExplain this example of the following water quality serial dilution. Note the dilution factors and how you would calculate #’s from the incubated plates. ……A serial dilution yielded TNTC in the 1:1 plate and the 1:10 plate, 50 cfu’s in the 1:100 plate and 3 cfu’s in the 1:1000 plate . What is the concentration (CFU)/ml of the raw sample? Is water acceptable for potable or Recreational use? Explain. When do you use filtration rather than serial dilution