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Q19 In order to find bactericidal antibiotics – substances that can selectively kill bacteria without harming human cells, a combinatorial library was screened in 96 well plates. Which of the five compounds (I - V) is the most likely to be a bactericidal antibiotic? Choose one answer only. | || ||| IV v Bacterial cells and compounds Bacterial cells only Human cells and compound Human cells only a. V b. III c. II d. I cell growth no cell growth

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q41 IF YOU DO NOT KNOW THE ANSWER PLEASE DO NOT REJECT IT please calculate the unknown concentration of the protein D wih an absorbance value of A412 given the standard curve indicated in the table. write your answers in numbers only with 2 decimals. protein concentration (ug/ml) absorbance 0 0.000 0.02 0.161 0.04 0.284 0.06 0.438 0.08 0.572 0.10 0.762

This problem can be worked with Equations 18-6 on a calculator or with the spreadsheet in Figure 18-5. Transferrin is the iron-transport protein found in blood. It has a molecular mass of 81 000 and carries two Fe³* ions. Desferrioxamine B is a chelator used to 18-A. treat patients with iron overload (Box 11-1). It has a molecular mass of about 650 and can bind one Fe³+. Desferrioxamine can take iron from many sites within the body and is excreted (with its iron) through the kidneys. Molar absorptivities of these compounds (satu- rated with iron) at two wavelengths are given in the table. Both com- pounds are colorless (no visible absorption) in the absence of iron. e(M¯' cm¯') A(nm) Transferrin Desferrioxamine 428 3 540 2 730 470 4 170 2 290 (a) A solution of transferrin exhibits an absorbance of 0.463 at 470 nm in a 1.000-cm cell. Calculate the concentration of transferrin in mil- ligrams per milliliter and the concentration of bound iron in micro- grams per milliliter. (b) After…

C3H4O 11 10 HSP-00-252 9 - 00 8 7 6 5 ppm ₁2H 4 3 1H 1H N

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Case Studies An 18-year-old male high school student who had a 4-year history of diabetes mellitus was brought to the emergency department because of excessive drowsiness, vomiting. and diarrhea. His diabetes had been well controlled with 40 units of NPH insulin daily until several days ago when he developed excessive thirst and polyuria. For the past 3 days, he has also had headaches, myalgia, and a low-grade fever. Diarrhea and vomiting began 1 day ago Chemistry Test Results Sodium 126 mmol/L Urinalysis Results Specific 1.012 gravity pH 5.0 Glucose 4+ Ketone Large Potassium Chloride Bicarbonate Plasma glucose 6.1 mmol/L 87 mmol/L 6 mmol/L 600 mg/dL BUN Creatinine Serum ketones 48 mg/dL. 2.0 mg/dL 4+ 1. What is the probable diagnosis of this patient 2. What laboratory test(s) should be performed to follow this patient and aid in adjusting insulin levels? 3. Why are the urine ketones positive? 4. What methods are used to quantitate urine ketones? Which ketone(s) do they detect?

Please refer to the image attached below and answer the following question. Thanks What referrals would you give to her and in what order?

Benzocaine has been tested as an anaesthetic for inhibition of m1 muscarinic acetylcholine signalling. Using the data below, plot a graph and determine the IC50. Concentration (M) 1 x 10-6 10 x 10-6 100 x 10-6 1000 x 10-6 10000 x 10-6 100000 x 10-6 % of control response 97 93 78 56 42 36

ANSWER ALL QUESTIONS ON THE WORKSHEET AND USE THE INFORMATION GIVEN IN THE IMAGES

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G neural crest tissue - Google Sear x A CHM 112 112-1 and 112-E1 A Presentation Session Student + 8 https://app.peardeck.com/student/twkkhzvar For quick access, place your favorites here on the favorites bar. Manage favorites now Peardeck Exercises Use #3. Nitol6) + 3 Fa(6)Z NF(1) + 3 HF(G) [1: 5,0 x10°n 0.10M Calculat K 2.0M 3.5 x 10°M Pear Deck Interactive Slide Students, draw anywhere on this slide! Do not remove this bar Slide 1/2

A1L TPN order is written for 400 mL 10% Dextrose, 300 mL 4.25% amino acids, and a total of 37 mL of additives. How much sterile water for injection should be added? a. 55 mL b. 137 mL c. 163 mL d. 263 mL

How does carminic acid a (organic compound) allow them to function as a pigments in 2-3 sentences.

A direct enzyme-linked immunosorbent assay (ELISA) test on a patient's sample is shown below. Development of a strong (dark) color reaction would indicate: 1 Antibody is adsorbed to well. 2 Patient sample is added; complementary antigen binds to antibody. 3 Enzyme-linked antibody specific 4 Enzyme's substrate () is added, for test antigen is added and binds and reaction produces a product that causes a visible color change (O). to antigen, forming sandwich. A low concentration of a specific antigen in the patient's sample O A high concentration of a specific enzyme in the patient's sample The patient's antibody is specific for the enzyme's substrate O A high concentration of a specific antigen in the patient's sample A high concentration of a specific antibody (against the test antigen) in the patient's sample

Hello, I would like help with problem 41 in the image attached.

PHOTOSYNTHETIC PIGMENTS 1.6 0.7 1.4 Qy CH 0.6 1.2 Soret 0.5 1 H 0.4 0.8 0.3 COOCH 0.6 phytyl bacteriochlorophyll a 0.2 0.4 Qx 0.1 0.2 300 400 500 600 700 800 700 750 800 850 900 2 (nm) 2 (nm) Figure 4.7 Absorption (left) and fluorescence (right) spectra of bacteriochlorophyll a in diethyl ether 5. Look at this figure from Blankenship's book, Molecular Mechanisms of Photosynthesis. You can see the structure for bacteriochlorophyll a, along with its absorption spectrum. a. What is the molecular shape around the labeled carbon atom? b. What is the hybridization around that same carbon? c. Based on this structure, would you expect this molecule to absorb light in the visible spectrum? Why or why not? Absorbance Fluorescence (Arbitrary units)

EQD₂ = nd* α Assume a/B (d+(a/B)) (2+(a/B)) BED:= (nd)*(1+ α =2 for late effects and a/B 10 for acute effects 1. Using the Equivalent Dose in 2 Gy Fractions equation, compare the following protocols. Which would have better tumor control? Which would have worse late effects? 42 Gy delivered in 12 fractions; 30 Gy delivered in 5 fractions.

1) Which of the diet sodas have the highest concentration of caffeine? Which standard best reflects this concentration?

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Calculate the concentration of atmospheric carbon compounds in ppbv using the data in the table below: Compound                                                             Concentration (µg/m3) Toluene                                                                   980 m,p-Xylene                                                              910 o-Xylene                                                                  510 Benzene                                                                   370 Ethylbenzene                                                           310 1,3,5-Trimethylbenzene                                           230 1-Ethyl-4-methylbenzene                                        200 Hexane                                                                    150 Heptane                                                                   130 1-Erthyl-2-methylbenzene                                       120

Chemistry You are the only doctor in a clinic that is cut off from the outside world by violent storms and landslides. A 30-year-old woman suffering from tachycardia is brought in. You can see she is likely to die without treatment, and although you have very few drugs, you have propranolol, a beta blocker, in injectable vials. You decide to give the woman intravenous propranolol. The pharmacokinetics of propranolol include a clearance of 50L/hour and a half-life of 3 hours. If an intravenous infusion of propranolol is started at a rate of 0.5mg/minute, approximately how long would it take to reach 93.75% of the final steady-state concentration? 3 hours 50 minutes It would depend on the dosage 12 hours

analyte concentration(C)(mg/ml) injection volume (ul) elution time (time) peak DAD signal(mAU) caffeine 1 1 4.67 302.85 aspartame 5 1 7.53 15.83 benzoic acid 1 1 8.14 89.98 saccharin 1 1 1.91 84.86 mixture(add everything above with 1:1:1:1 ratio)   1 4.47 69.58 How to get the concentration of the mixture in this case?