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Curren'S Math For Meds: Dosages & Sol

Curren'S Math For Meds: Dosages & Sol

11th Edition

ISBN:9781305143531

Author:CURREN

Publisher:CURREN

Chapter10: Reconstitution Of Powdered Drugs

Section: Chapter Questions

Problem 7.2P

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What is the charge of an ionized peptide in the mass spectrometer if its isotopic peaks are 0.20 m/z apart?
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QUESTION 34
In the Lineweaver Burke plot shown below, which of the following is true?
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O Km is increasing, Vmax is decreasing
O Km is decreasing, Vmax is decreasing
O Km is increasing, Vmax is increasing
O Km is decreasing, Vmax is increasing
QUESTION 35
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(MB = methylene blue) What is the concentration of the sample of the substance with the reporter absorbance of 0.40 at 595 nm?
The calibration curve shown below was used to analyze an unknown protein solution. What is the concentration of the unknown solution, if the absorbance of the unknown is 0.505? Answer in ug/mL. 1.2 y%3D0.005x+0.061 R=0.992 0.8 0.6 0.4 0.2 50 100 150 200 250 Concentration ug/ml Absorbance
(b) Table Q1 below provides optical measurements of samples with known concentrations of analyte (ten samples were measured and the average and standard deviation are presented). They are also represented graphically in Figure Q1, below the table. Analyte concentration (nM) 0.1 0.2 0.5 1 2 5 10 15 fluorescence intensity 300000 250000 200000 150000 100000 50000 0 0 Table Q1 Fluorescence intensity (average) 9300 9200 10800 19600 37200 90000 178000 224000 5 [Analyte]/nM 10 Standard deviation 2000 1200 1000 2000 10000 30000 25000 40000 15 Figure Q1. Signal intensity for different analyte concentrations. Error bars are standard deviation. (ii) Calculate the limit of detection (LOD) for this sensor. (iii) A patient sample measured using this biosensor in the diagnostic laboratory generates a signal of 142800. The coefficient of variation of the device is 5%. Explain whether the diagnostic lab would have the confidence to report that the sample has a concentration in analyte of 8 nM or…
For the serial dilution, your stock solution must have a concentration of 3.5 mg/mL. How much diluent must be added to the 5.3 mg/mL red cell to prepare the stock solution? Show pertinent solution/s. 7. If the red cell suspension is the stock solution, what is being quantified in this test? What diluent/reactant should be used to detect your answer in number 7?
Consider the fluorescence spectra for bovine serum albumin (BSA) below. One solution contains phosphate buffered saline (PBS), while the other contains 1M HCL. Why does the fluorescence change the way it does? I.e., why do we observe a higher peak and a shift to the left under the presence of acid?
Four lab groups completed the experiment listed in the lab diluting lul of FCF dye into 1ml of water. The A625 values are listed below. For brilliant blue FCF, ɛ =97000 M-1cm–1 MW = 792.8 g/mol %3D Group # A625 % solution (in original stock sample) Percent ror (True value of Stock=0.2%) 1 0.244 0.199 0.5 0.209 0.170 15 3 0.306 0.250 25 4 0.187 0.153 0.235 a. Which group was more accurate? b. What are possible reasons group 3 had a much higher Absorbance than the others? c. What are possible reasons group 4 had a much lower Absorbance than the others?
A protein required 6.8 min to travel 82 cm to the detector in a 96 cm -long capillary tube with 25.4 kV between the ends. Find the apparent electrophoretic mobility. How many femtomoles of 2.4 μM protein are injected electrokinetically into a 50 μm diameter capillary at 5.0 kV for 3.0 sec. if the sample has half of the conductivity of the background electrolyte.
You have been given a stock solution of dye that has a 10X concentration. You wish to make 750ul of a 1X dilution of this dye. Give the volume of 10X dye that you will use (in ul)
We have isolated a mixture of 2 protein of the same molecular weight but different isoelectric points. The isoelectric points are 7.5 for Protein A and 9.0 for Protein B. What would be the order of elution from a cation exchange column if a buffer of pH 7 is used? Group of answer choices Both proteins will remain in the column. Both proteins will elute simultaneously Protein B followed by Protein A Protein A followed by Protein B
The simple form of |Hoff equation is: II = [B]RT In this equation the [B] is the molar concentration of solute. So: n m [B] = v MV = cg /MA Where c, the mass concentration of the solute is in the total volume of solution and M, is the molar mass of the solute. This equation can be replaced in the previous one to get: RT II = MA In this equation molar mass of given solute can be detemined from the slope of the II vs Cz plot. This equation applies only to solutions that are sufficiently dilute to behave as ideal-dilute solutions. In the case of non-ideal solutions, however, the extended formula is: II = [B]RT{1+ k. [B] + n. [B]² + ...} Biological macromolecules dissolve to produce solutions that are far from ideal, but we can still calculate the osmotic pressure by assuming that the van't Hoff equation is only the first term of a lengthier expression: II [B]RT(1+ b. [B]) II = RT + bRT. [B] [B] II = RT + bRT./M. */Ma п RT ÞRT Ca MA MA In this equation molar mass of given biomolecule can…
A flat (not spherical) tissue engineered skin (thickness 2.5 mm) is attached to the bottom of a dish and cultured with cell media atop it (which has an oxygen concentration of 0.15 mol/m3). The diffusivity of oxygen in the skin is 3.4 E-9 m2/s, and according to experiments that you’ve performed, you want to make sure that the concentration of oxygen in the device doesn’t fall below 0.06 mol/m3. (Below that concentration harms the cells.) The rate of oxygen consumption is -5.9 E-17 mol/[cell◦s]. What is the maximum cellularity (in cells/mL, three significant digits) that this tissue engineered skin can support?

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