What additional experiments could you do with chicken eggs to test the properties of membranes discussed in this chapter? • Hospitals often inject fluid into patients' veins to increase blood volume. When they do, they use a 0.9% saline solution. Why do you think they use isotonic saline instead of distilled water?
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• What additional experiments could you do with chicken eggs to test the properties of membranes discussed in this chapter?
• Hospitals often inject fluid into patients' veins to increase blood volume. When they do, they use a 0.9% saline solution. Why do you think they use isotonic saline instead of distilled water?
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- What is the effect of different alcohols on membrane permeability? We made the lab with a beetroot. We had methanol, ethanol, and propanol. the results were: The scale of colors were 7 darkest red and 0 colorless. Methanol, 7. Ethanol, 4. Propanol, 3. I am having a issue undertanding the hypothesis of this experiment. Like the purpose and why the colors mean something.1. Frog skin is an excellent system for studying sodium transport across an epithelium. Frog skins is stripped from the frog's leg and tied into a sack. The inside of the sack is the internal (extracellular fluid) surface of the frog skin. The sack is filled with normal frog saline and the filled sack is placed in a beaker filled with the same saline. The recording electrode of a voltmeter is placed inside the sack and the ground electrode is placed in the bath. a. (Draw a picture to help you visualize this arrangement.) b. When the electrodes are first placed, there is no transepithelial potential difference. c. After an hour, the transepithelial potential is +20, inside the sack relative to outside.5. "Time-release" drugs work by releasing a drug to the body at a constant rate such that the drug concentration at one time is not large enough as to cause harmful side effects OR not low enough to the point where it is an ineffective therapeutic. A design Elastic impermeable membrane Semipermeable Saturated Nacl solution Drug membrane schematic of a time-release pill is shown below. Explain how it works from an osmotic pressure standpoint. Rigid wall containing tiny holes
- You are viewing two samples of mammalian red blood cells (erythrocytes) under a microscope. One first sample is made up of cells with a typical round shape. Most of the cells in the second sample had burst open. •Describe the properties of the solution that was used to prepare the second sample. • Identify one type of solute that can move through simple diffusion and does not affect osmotic pressure or require a membrane protein to cross a plasma membrane.view View Help O Editing AaBbCc AaBbCc No Spacing AaBbCc AaBbe Normal Heading 1 Heading Paragraph Styles 34) The RNA that has an anticodon and attaches to a specific amino acid is RNA. 35) T/F Buffers cause abrupt and large changes the pH of the body by releasing or binding H+ ions. 36) What is a dynamic equilibrium of your internal environment termed? 37) are membrane junctions that distribute tension across a sheet of cells. 38) T/F About 60% to 80% of the volume of most living cells consists of organic compounds. ictions: On1. What is the dialysis tubing selective permeable to? Make a claim and support it with evidence? 2. What is selectively permeable membrane? 3. What is a cell membrane? 4. Give the membrane functions and discuss briefly. 5. How does a dialysis tube dialysis tube represent a cell membrane? 6. Why is the membrane important in a dialysis machine?
- You are a doctor in the emergency room. You have a patient whose blood cells are composed of the following: 80 molecules of glucose, 50 molecules of hemoglobin, 20 molecules of dextrose, and 2000 molecules of water. a. What is the total solute concentration of her cells? b. If you needed to make an isotonic solution of saline for her IV, how many salt molecules would you need to add to 1000 molecules of water? How do you know this is the correctamount?2. Kidney dialysis machines use osmosis to take over the filtering function of the kidneys. Dialysis machines use a semi-permeable membrane trough which some small molecules can pass (such as water, salts, metabolites, and somedoxins) but through which larger objects (such as proteins and blood cells) cannot. Using the concepts learned in this lab, explain how dialysis could be used to get toxins out of the blood and replace the filtering function of the kidneys.Scenario 4 Epinephrine, also known as adrenaline, is a hormone produced by cells in the adrenal gland and is commonly associated with the short-term fight-or-flight response when a person senses a dangerous threat in their environment. Describe the membrane transport mechanism (50-150 words) involved in the release of epinephrine from these cells. Your response should include the following: Description of how the type of membrane transport works. Reasoning for why you chose it.
- 8.Patients who enter the emergency room dehydrated are usually given sterile saline solution intravenously. The solution administered is isotonic to prevent cell damage. What would happen if the solution was hypotonic? Group of answer choices A. Hypotonic solutions have a higher osmotic pressure than that within cells so hemolysis can occur B. Hypotonic solutions have a lower osmotic pressure than that within cells so crenation can occur can occur. C. Hypotonic solutions have a lower osmotic pressure than that within cells so hemolysis can occur. D. Hypotonic solutions have the same osmotic pressure as that within cells so nothing will happen. 9.The solubility of CaCl2 in water is135g/100 ml. What would be the best method for preparing a 50.0 mL of supersaturated CaCl2 solution? Group of answer choices A. add 72 g of CaCl2 to 50.0 mL of H2O at 100 °C while stirring at room temperature B. add 67 g of CaCl2 to 50.0 mL of H2O at 100 °C while stirring at room temperature…Using the principle of diffusion, a dialysis machine removes waste solutes from a patients blood. Imagine blood runs through a cylinder wherein diffusion can occur across an artificial selectively permeable membrane to a saline solution on the other side. Which of the following statements is correct? a. Solutes move from lower to higher concentraction. b. The concentration gradient is lower in the patients blood than in the saline solution wash. c. The solutes are transported through a symport in the blood cell membrane. d. The saline solution has a lower concentration gradient of solute than the blood. e. The waste solutes are actively transported from the blood.1.what is the importance of membrane transport and what are the values that you need to develop after knowing the importance of it? 2.what can happen when an organism lacks the necessary enzymes? 3.how do enzymes aid in harnessing the energ from the food we eat? 4.how are the enzyme activity affected by concentration of substrate, changes in temperature, and ph?