QUESTION 26 If a 10 mg/mL solution of ovalbumin (mol. wt 42 kDa) reacts with Biuret reagent, and has an absorbance of 0.8 at 540 nm, a 10 mg/mL solution of lysozyme (mol.wt 14 kDa) when combined with Biuret reagent will show an absorbance of at 540 nm. O Abs = 0.8 O Abs > 0.8 O Abs <0.8 O Not enough information.
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- Question 1: ATP synthases contains 3 copies of each of the large subunits (called α and β in the E. coli enzyme). The number of c subunits can vary among different ATP synthases, ranging from 8 to 17. Part a: Briefly explain how this variation in the number of c subunits would affect the energetics of ATP synthesis. For a fixed value of the protonmotive force, how much energy can the gradient provide to drive one revolution of the ATP synthase, in a synthase with 8 c- subunits versus a synthase with 17 c-subunits?QUESTION 10 A 48-year-old female patient has breast carcinoma and presents to the hospital outpatient unit complaining of low energy. The physician orders hemoglobin and hemocrit counts, which were performed. After evaluation, it is determined the patient has anemia in neoplastic disease. The physician orders 3 units of packed red blood cells, which are transfused on the unit. Which coding is best for the blood products? (See the HCPCS options below.) HCPCS Code Descriptor P9010 Whole blood for transfusion, per unit P9021 Red blood cells for transfusion, per unit P9060 Fresh frozen plasma for transfusion, per unit, donor retested P9615 Catheterization for collection of specimen P9045 Infusion, albumin, 5%, 250 ml A. P9021 B. P9021 X 3 C. P9045, P9060 D. P9010 X 3, P9615Question:- 18. For facilities that employ a multiskilled workforce to draw blood cultures and use iodine preparations, the combination of antiseptic solutions that has been shown to be most effective in reducing contamination is a. separately packaged alcohol and povidone iodine b. separately packaged alcohol and iodine tincture c. commercially prepackaged prep kits containing iodine tincture d. commercially prepackaged prep kits containing an iodophor
- question 24 DNA is a hereditary molecular that is composed of A Deoxyribose,phosphate, and nitrogen bases B Deoxyribose,a pentose, and nucleic acids C Sugar,proteins and thymine D Adenine, phosphate, and riboseQuestion 56 You (a healthy individual) are swimming underwater when you can no longer resist the urge to breathe. This overwhelming urg probably due to O the autorhymthic cells in your diaphragm contracting O the decrease in O 2 available to the cells of the body. O the increase in plasma H *. O the increase in pH has made your blood dangerously alkaline. 1.67Question 6 In the first part of the experiment, there were only a few colonies on the streptomycin positive plate. In the second part, there are a large number of colonies on the streptomycin positive plate that was inoculated with the antibiotic resistant strain. What is the most likely explanation for this difference? 1. The antibiotic resistant strain was composed of a large number of individuals with resistance to streptomycin 2. The exposure to streptomycin caused a mutation in a few individuals
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- Question 24 pts When we are vaccinated against SARS-CoV-2, what happens? (select all correct answers) Group of answer choices a) Our adaptive immune system becomes primed to recognize the SARS-CoV-2 virus. b) Our DNA becomes modified. c) We will permanently have viral proteins in our cells d) Our cells will make a partial or complete viral protein, which our immune system will recognize as foreign. e) Memory cells will be ready for a new infection.Question 52 A 6-month-old child has developed skin irritation due to an allergic reaction. He has been prescribed a topical skin ointment. The nurse will consider which of the following before administering the drug? That the infant's skin has greater permeability than that of an adult That there is less body surface area to be concerned about That there is decreased absorption rates of topical drugs in infants That there is a lower concentration of water in an infant's body compared with an adultQuestion 15 general , the mouse receiving the PTU in his / her food: 1. consumed more oxygen at all temperatures 2. ate more than the control mouse 3. consumed less oxygen at all temperatures 4. produced more oxygen at all temperatures