PHYSIO EX 1 Simulating Dialysis (Simple Diffusion) 1. Describe two variables that affect the rate of diffusion. The temperature of the solutions and the difference in concentration of the ion or molecule between the sides of the membrane 2. Why do you think the urea was not able to diffuse through the 20 MWCO membrane? How well did the results compare with your prediction? Since the chemical formula for urea is (NH2)2CO and its molecular weight is about 60. It will not diffuse through the
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Neurophysiology and Learning September ‚ 2010 For the survival and progression of life as we know it‚ humans and non humans must rely on the fundamental aspects of learning. Learning is all around us‚ we experience it in our everyday lives‚ sometimes without even being aware of it. Theories of learning were introduced centuries ago‚ and being so important and of much significance in Psychology‚ they are continuously studied‚ revised and improved. A popular branch of the study of learning‚ Neurophysiology
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0‚ and why does this observation make sense? a. 0.00 g; there was no activation of skeletal muscle fibers by this stimulus. What is the lowest stimulus voltage that induces active force in the skeletal muscle? b. threshold voltage 6. Review Sheet Results 1. Describe the effect of increasing stimulus voltage on isolated skeletal muscle. Specifically‚ what happened to the muscle force generated with stronger electrical stimulations and why did this change occur? How well did the results
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PhysioEX notes Autorhythmicity- heart’s ability to trigger its own contractions Phase O- a lot like depolarization in neuronal action potentials. Sodium channels open‚ increase of sodium INTO cell. Phase 1- sodium channels close‚ potassium channels close‚ decrease in potassium and sodium. Calcium channels open‚ increase of calcium into cell. Phase 2- Plateau phase‚ membrane still depolarized (contract). Potassium channels closed‚ L-type calcium channels stay open. Lasts 0.2 seconds/200
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1/19/11 11:56 AM Page 85 Karlie Sowder Feb. 20 2013 LAB TIME/DATE ________________________ NAME_________________________________ R E V I E W S H E E T EXERCISE 6 Classification of Tissues Tissue Structure and Function—General Review A group of cells working together to perform a common function. They form together to make up organs 1. Define tissue. _______________________________________________________________________________________ ___________________________________
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Chapter 48 Nervous Systems Lecture Outline Overview: Command and Control Center The human brain contains an estimated 1011 (100 billion) neurons. Each neuron may communicate with thousands of other neurons in complex information-processing circuits. Recently developed technologies can record brain activity from outside the skull. One technique is functional magnetic resonance imaging (fMRI)‚ which reconstructs a 3-D map of the subject’s brain activity. The results of brain imaging and other
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Glomerular Filtration Activity 1: Effect of Arteriole Diameter on Glomerular Filtration 1. Compare this data with your baseline data. How did increasing the afferent arteriole radius affect glomerular filtration rate? >>Increasing the afferent arteriole radius pushed the glomerular pressure‚ the glomerular filtration rate‚ and the volume of urine to be higher than the baseline data. Increasing the afferent arteriole radius increased the glomerular filtration rate. 2. Under
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REVIEW SHEET EXERCISE 1 Cell Transport Mechanisms and Permeability Simple Diffusion The following refer to Activity 1: Simulating Dialysis (Simple Diffusion). Which solute(s) were able to pass through the 20 MWCO membrane? NONE 1. According to your results‚ which solute had the highest molecular weight? Albumin 2. Which solute displayed the highest rate of diffusion through the 200 MWCO membrane? Na+Cl 3. Using the data from Chart 1‚ explain the relationship between the
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specifically digests cellulose. 8. What is the substrate of peptidase? Explain‚ based upon your results. The substrate is a synthetic protein called APNA. PEx-141 PEx-142 Review Sheet 39B Protein Digestion by Pepsin The following questions refer to Activity 3: Assessing Protein Digestion by Pepsin. 9. At which pH did you see the highest activity of pepsin? body? 2 How does this
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I am disappointed with the SFSU bookstore. I went to the bookstore to buy a Scantron sheet for my final exam in Spring 2016. Whether I went there in the morning or at noon‚ there was always a long line in front of the checkout counter. I spent at least one hour to buy a Scantron sheet. I really hate to waste so much time in line. There are two checkout counters on the upper floor‚ I couldn’t understand why they just used only one counter. I suggest you buy a Scantron earlier. Moreover‚ I am not satisfied
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