Question 5 A common test for liver function involves sprinkling sulfur powder onto a sample of urine (mostly water with dissolved bodily waste). Sulfur powder sprinkled on a sample from an individual with impaired liver function will sink because the urine contains a high level of bile salts, while the sulfur powder sprinkled on normal urine samples will float. Which of the following best explains why bile salts cause the sulfur powder to sink? A Bile salts decrease the surface tension of the urine sample. B) Bile salts increase the water potential of the urine. Bile salts increase the density of the urine sample. Bile salts decrease the strength of the covalent bonds within a water molecule.

Question 5 A common test for liver function involves sprinkling sulfur powder onto a sample of urine (mostly water with dissolved bodily waste). Sulfur powder sprinkled on a sample from an individual with impaired liver function will sink because the urine contains a high level of bile salts, while the sulfur powder sprinkled on normal urine samples will float. Which of the following best explains why bile salts cause the sulfur powder to sink? A Bile salts decrease the surface tension of the urine sample. B) Bile salts increase the water potential of the urine. Bile salts increase the density of the urine sample. Bile salts decrease the strength of the covalent bonds within a water molecule.

Human Anatomy & Physiology (11th Edition)

11th Edition

ISBN:9780134580999

Author:Elaine N. Marieb, Katja N. Hoehn

Publisher:Elaine N. Marieb, Katja N. Hoehn

Chapter1: The Human Body: An Orientation

Section: Chapter Questions

Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...

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Question 5. Three drugs exhibit the following properties. Clearance (cl) and fraction unbound (fu) are calculated based on plasma data. If any of the three drugs is being overdosed, is it possible then to accelerate the excretion by administering diuretics? Is so which of the three drugs in the table is relevant, and justify/motivate your answer! Renalt CL (mL/min) Drug Teofyllin Total CL (mL/min) fu 45 0.45 Gentamicin 110 110 0,9 Cefalexin 300 300 0,85 The answer is provided down below, but I don't understand it. How do we know this, how was it solved? Please explain thoroughly. Answers: Gentamicin and Cefalexin is excreted majorly via urine, in these cases diuretics can accelerate the excretion in case of overdose.
Question 74 Using these data-Calculate Total Body Water (TBW) for an adult male subject: Body Weight = 68 Kg Amount ofD20 injected, corrected for loss - 72 mg Plasma D20 concentration - 2 mg / L Amount of inulin injected, corrected for loss = 30 mg Plasma inulin concentration 2 mg/L Amount of Evan's Blue injected, corrected for loss = 4 mg Plasma Evan's Blue concentration - 1 mg/ L Hematocrit (Hct) - 45% 36L 40L 15L 4L 6L F3 FA F7 3
Question 47 USING BLOOD VALUES TO DETERMINE THE CAUSE OF ACIDOSIS OR ALKALOSIS The following blood values were obtained from a patient being assessed for chronic renal failure pH 7.28 Pco2 26 mm Hg HCO3 14 mEq/L
Question 1. You are given a P1000 & a P5000 micropipette to validate by measuring the weight of distilled water at the maximum volume and minimum volume for both pipettes. Each volume is tested five times and you recorded the weight as given by the balance (recorded in grams). Results P1000 Weight 1 (g) Weight 2 (g) | Weight 3 (g) | Weight 4 (g) Weight 5 (g) 1000 µl 1.1 0.95 0.94 0.98 0.97 100 µl 0.10 0.14 0.11 0.10 0.11 Does this micropipette pass validation? Show your workings and comment on how you reached your decision. P5000 Weight 1 (g) | Weight 2 (g) Weight 3 (g) Weight 4 (g) Weight 5 (g) 5000 µl 5.30 5.32 5.25 5.17 5.20 1000 µl 0.75 0.84 0.81 0.77 0.79 Does this micropipette pass validation? Show your workings and comment on how you reached your decision
QUESTION 8 Saturation is possible with: carrier proteins O enzymes both carrier proteins and enzymes O none of the other answers
Question 51 51. Which volume of body fluid is contained inside cells? O ICF (intracellular fluid) O plasma O ECF (extracellular fluid) O ISF (interstitial fluid)
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QUESTION 2 You obtained the following raw data when setting up a Bradford standard curve: 0 1 2 3 4 BSA (mg/ml) 595nm Absorbancy 6 7 8 9 10 0.225 0.310 0.420 0.510 0.610 0.720 0.810 0.915 0.950 0.980 0.990 After blanking against a bradford-dH₂O sample, the protein concentration of an unknown sample was determined using the same method and an absorbancy of 0.568 was obtained. Set up a standard curve, excluding outliers (experimental and statistical) and determine the protein concentration in the unknown sample in mg/ml (up to 3 significant figures).
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Question 7: read all before answering. A. Calculate how to make 10 ml of a 7.5% methylene blue stock solution (from solid powder). B. Calculate how to make a series of 1:10 dilutions of this stock. Imagine you’ll use 5 ml of each dilution for your experiment. Calculate the final concentrations of each tube. tube 1: take some stock, dilute it 1:10 with some water in a new tube = #1 tube 2: take some of #1, dilute it 1:10 with some water in a new tube tube 3: take some of #2, dilute it 1:10 with some water in a new tube tube 4: take some of #3, dilute it 1:10 with some water in a new tube C. First, decide the total volume to make of each tube – keep in mind measurement accuracy (consider preparing 20% more solution than what you will use). D. Then, calculate how much stock, water and final concentration of each. E. Then, instead of doing a serial dilution, calculate making each of the above solutions using the weight/volume % solution method. F. Pros and Cons of serial dilution method vs…
Question 17 You have pethidine injection 100 mg in 2 mL. The patient is prescribed 75 mg. How much do you draw up?