3. Explain why a change in extracellular Na+ did not significantly alter the membrane potential in the resting neuron? Your answer: There are less sodium leak channels than potassium leak channels‚ and more of the potassium channels are open. 4. Discuss the relative permeability of the membrane to Na+ and K+ in a resting neuron. Your answer: Membrane permeability to sodium is very low because there are only a few sodium leak channels. The membrane is more permeable to potassium because of
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The QALMRI Method Explanation of writing a QALMRI The information you are trying to convey in writing your final project is the same as the information you are trying to extract from journal articles that you read. The QALMRI method highlights this important information as: What are the broad and specific questions?‚ what were the alternative hypotheses‚ what was the logic of the design‚ what was the method‚ what were the results‚ what inferences about the specific and broad question can be made
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muscle metabolism Skeletal muscle is the major tissue responsible for glutamine synthesis in the body [9‚10]. In this context‚ glutamine anabolic effects in the skeletal muscle not only preserve lean mass‚ but also maintain plasma glutamine concentration in the body. Glutamine provides energy substrate to cells with a high turnover‚ nucleic acid precursors to cells of the immune system and is involved in the maintenance of acid-base balance [9‚ 11‚ 12]. The key enzymes in the metabolism of glutamine
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Carbohydrate Metabolism Carbohydrate metabolism starts with digestion in the small intestines. This is the site where monosaccharides are absorbed into the blood stream. This type of metabolism is basically considered to be glucose metabolism because carbohydrates are eventually broken down into glucose so that it can diffuse into the blood stream. There are three hormones in the body that control the concentration on glucose in the body: Insulin‚ glucagon‚ and epinephrine. If sugars are too
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Homework Zero 0. What do you hope to achieve in this course? I have taken economics courses in the past‚ but was never strong with the math equations. I am excited to improve this weakness of mine. 1. What skills do you bring to the classroom? To your fellow students? Although I was an economics major in undergrad‚ I took many computer classes and as a result am very proficient with computers. I can use these skills when working with classmates as well. 2. How will your classmates
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Exercise 6: Cardiovascular Physiology: Activity 4: Examining the Effects of Chemical Modifiers on Heart Rate Lab Report Pre-lab Quiz Results You scored 100% by answering 4 out of 4 questions correctly. 1. The parasympathetic nervous system releases __________ to affect heart rate. You correctly answered: d. acetylcholine 2. A cholinergic drug that worked the same as acetylcholine would You correctly answered: c. be an agonist and decrease heart rate. 3. Norepinephrine affects the heart rate
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Basic metabolism Topics covered today: 1. Concept of equilibrium and Gibb’s free energy 2. Catalysis 3. Energy carrier molecules 4. (reading: 65-88) Keeping a system organized requires energy * Maintain structures * Create-and re-create the building blocks * Reorganize/adapt * Two categories of metabolism * Catabolism: get energy by breaking down food (bimolecular). * Anabolic pathways: use energy to build molecules. Second law of thermodynamic
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cellular respiration is an example of chemical reactions. Throughout the chapter‚ the cell’s metabolism will be examined to understand how it controls the chemical reactions that take place in the cell. Section 6.1 - An Organism’s Metabolism Affects Energy and Matter The metabolism in cells is responsible for the series of chemical activities that take place in the cell. Metabolic Pathways The metabolism controls the material and energy resources of the cell. Through the
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Unit 4 Exercise 1: Guided Reading Chapter 11 1. What is the basic format for a proposal? An introduction that defines a problem‚ stresses its importance‚ and offers a brief description of the proposed solution (the thesis). An analysis of the problem‚ discussing its causes‚ and its effects. A detailed plan that shows step by step how to solve the problem. A costs-benefits analysis that measures the benefits of the plan against its costs. A conclusion that looks to the future and stresses the importance
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Metabolism is the complete and necessary chemical activity carried out by living organisms. This process is carried out in two different ways: anabolic and catabolic. The catabolic breaks down large chemical compounds while anabolic synthesizes components to create larger molecules. Respiration provides energy for these reactions‚ and respiration needs oxygen to occur. Thus‚ calculating the change in oxygen can determine metabolic rate (University‚ 59). In this experiment‚ we will observe and analyze
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