Describe the effects of a lethal dose of ionizingradiation at the molecular level. What type of filterwould be used to filter sterilize a heat-sensitive liquid?
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Describe the effects of a lethal dose of ionizing
radiation at the molecular level. What type of filter
would be used to filter sterilize a heat-sensitive liquid?
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- in food microbiology, how do you compute for concentration (M) and absorbance (A) of peroxidase activity on hydrogen peroxide at different pH values? (wavelength used = 415nm). can you please explain the calculations thank you if given: Temperature = 75 C Molar absorptivity coefficient = 10.5 Path length (cm) = 2 I = transmitted light = 0.45Explain this approach: matrix-assisted laser desorption ionization (MALDI) ?The Cavity Ring-Down Spectroscopy (CRDS) technique offers greater sensitivity compared to other conventional spectroscopy techniques. Explain the underlying mechanism of this.
- Penicillin heralded the dawn of the antibiotic age when it was discovered in 1928 and is now the most widely used antibiotic in the world. A membrane electrode was developed for the quantitative analysis of penicillin. The table above shows the data which were collected using a set of penicillin standards against saturated calomel electrode. An unknown sample produced a potential of 142 mV. A) Which served as the reference electrode? B) What is the molar concentration of penicillin in the sample?Given this, if you used 6g of vitamin Z powder to make 20 ml of solution, what is the % concentration of this solution? (I gave the image since I don't know if that info is needed to solve this question.)It also gives a follow-up, if you can help here too: You work in a lab as a summer student. One of your tasks is to make sure that there is enough cell culture medium containing antibiotics to grow bacteria. One day you realize that there is only 5 ml of 10% Antibiotic stock solution in the freezer. You decide to use it all to prepare the working culture medium with 0.01% antibiotic. In the lab there is plenty of growth medium without antibiotics. (Note: dilution in medium is like dilution in water). You remember the equation to make dilutions of stock solutions. You usually use this formula to calculate the required volume of a stock solution, but you realize it can apply here as well, even though the unknown is the final volume. So, you make that dilution. Given that each bacterial…Determine the amount of glucose in the unknown sample by plotting a standard curve of Absorbance at 620 nm on Y-axis and μg of glucose on the x-axis.
- Consider the following prescription: Sol silver nitrate 0.5% 15mL Make solution isotonic for ophthalmic use. B. How many milligrams of potassium nitrate will need to be added to the prescription to make it isotonic? Report numerical value only rounded to a whole number. Need only handwritten solution only (not typed one).Nanoparticles were added in a liquid to prompt the medication release, and it was observed that 5 mg of the medication was released in 1 liter of PBS, which accounted for 60% of the total amount of the drug. While producing an equivalent number of nanoparticles, 5 ml of 10 mg ml−1 of the drug was added. What is the efficiency of encapsulation?The data from thin layer chromatographic separation of analgesics showed ibuprofen distance to be 0.752 mm. If the solvent distance is 1.85 mm. Calculate the retention factor for Ibuprofen?
- Using the sodium chloride equivalent method, make the following solution isotonic with respect to the mucous lining of the eye (ocular membrane): Tetracycline hydrochloride: 10 g NaCl: x g Sterile distilled water, enough to make 1000 mL Report your answer in grams (to one decimal place).Many heavy metals are used in antiseptics. Explain the oligodynamic effect and provide a clinical example of the use of heavy metals.briefly explain the important of using electrolyte gel between electrode and skin.
