Facilitated diffusion will occur between different concentrations. Material and Methods * Two beakers * Membrane holder * Four Dialysis membranes: 20 (MWCO)‚ 50 (MWCO)‚ 100 (MWCO)‚ 200 (MWCO). * Membrane barrier * Four solutes: NaCl‚ Urea‚ Albumin‚ Glucose * Solution dispenser * Deionized Water * Beaker Flush * Timer * Computerized Simulator Using the computerized simulator‚ the first step of the first experiment‚ you must place the 20 (MWCO)
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Name: Emily Roth Chapter 3 Check and Challenge Date: November 22‚ 2014 Hr: 5th hour Check and Challenge p 80 1.) What materials need to be exchanged across a cell membrane? Water‚ nutrients‚ waste‚ gasses (O2/CO2)‚ amino acids (to build proteins)‚ sugars (carbos)‚ lipids‚ nucleic acids. 2.) In what way is an organism a protected compartment? Organisms have many layers of cells and material (such as skin) that protect them from the environment. The also arare selectively permeable in determining
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In order to properly performed this test‚ the initially slant for unknown microorganism #17 is important. For this lab‚ two identical slants are used for two reasons. Firstly‚ the slant can be used to make sure that there is no contamination from the Nutrient Agar plate. Secondly‚ the second slant will become a stock culture to prevent the shortage of slants during performing the series of tests. Kliger’s Iron Agar tests can be used to determine multiple characteristics of unknown microorganism #17
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chapter 10 Student: ___________________________________________________________________________ 1. Antidiuretic hormone is released by: A.anterior lobe of the pituitary B.posterior lobe of the pituitary C.hypothalamus D.adrenal glands 2. Excretion primarily rids the body of: A.excess fuels B.undigested food C.minerals D.substances that were involved in metabolism E.All of the choices are correct. 3. Benign prostatic hyperplasia: A.is prostate cancer B.involves enlargement
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___________________________ Date: ________________________ Student Exploration: Circulatory System Vocabulary: artery‚ atrium‚ blood vessel‚ capillary‚ circulatory system‚ heart‚ platelet‚ pulmonary artery‚ pulmonary vein‚ red blood cell‚ urea‚ ventricle‚ vein‚ white blood cell Prior Knowledge Questions (Do these BEFORE using the Gizmo.) 1. Why do you need blood? __Blood carries oxygenon and nutrients around you body.___________________________________________________ 2
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anaerobic respiration and while one remained without mineral oil. (Table 2) * We then observed protein catabolism in Entrobacter aerogenes and Proteus vulgaris. We inoculated tubes with each bacteria‚ one containing a nutrient gelatin and one a urea agar medium and incubated the tubes‚ at room temperature and observed the growth and the color to determine whether hydrolysis took place. (Table 3) * To observe protein catabolism we also inoculated one tube with Enterobacter aerogenes and the
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The Renal Diet 1.The kidneys: * The kidneys are a pair of bean-shaped organs that lie on either side of the spine in the lower middle of the back. Each kidney weighs about ¼ pound. * It is important to keep the kidneys in good working order to allow them to work at an optimum level. * The main function of the kidneys is to remove waste products and excess water from the blood. The kidneys process about 200 l’s of blood every day and produce about 2 l’s of urine. * The kidneys
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acids and other derivatives that contain nitrogen. However‚ the liver is the major site of nitrogen metabolism in the body. In times of dietary surplus‚ the potentially toxic nitrogen of amino acids is eliminated via transaminations‚ deamination‚ and urea formation; the carbon skeletons are generally conserved as carbohydrate‚ via gluconeogenesis‚ or as fatty acid via fatty acid synthesis pathways. In this respect amino acids fall into three categories: glucogenic‚ ketogenic‚ or glucogenic and ketogenic
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molecules can pass through while water molecules cannot. 3. Why do you think the urea was not able to diffuse through 20 MWCO? How well did the results compare with your predictions? The urea was not able to diffuse through 20 MWCO because the size of the pores of 20 MWCO was too small to allow the large size of molecules of urea to pass through. Since‚ the molecular weight of urea is 60.07‚ the molecules of urea were too large to enter the pores of the 20 MWCO. 4. Describe the result of the
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of eight different tests to identify the unknown. Material and Methods Eight different prepared types of media were provided to use to identify the unknown bacterium. They were a Gelatin Tube‚ MR Tube(Methyl Red)‚ VP Tube(Voges-Proskauer) Urea Tube‚ SIM Tube(Sulfur Indole Motility)‚ Citrate Slant‚ TSIA Slant (Triple Sugar Iron Agar) and Oxidase. Each one of the tubes and slants were inoculated using either the streaking or stabbing technique with one of the colonies from the growth of the
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