Name: Kyle Pockl Exercise 1: Cell Transport Mechanisms and Permeability: Activity 2: Simulated Facilitated Diffusion Lab Report Pre-lab Quiz Results You scored 50% by answering 2 out of 4 questions correctly. 1. Molecules need a carrier protein to help them move across a membrane because You correctly answered: d. they are lipid insoluble or they are too large. 2. Which of the following is true of facilitated diffusion? Your answer : b. Movement is active and against a concentration gradient. Correct
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Chapter 25-Urinary System Aldosterone is a hormone that causes the renal tubules to reclaim sodium ions from the filtrate. =TRUE The kidneys are stimulated to produce renin ________. =by a decrease in the blood pressure An important characteristic of urine is its specific gravity or density‚ which is ________. =1.001-1.035 Which of the following is the functional unit of the kidney? =Nephron In which part of the kidney is reabsorption (1) dependent upon the body’s needs at
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Molecules Across Cellular Membrane Abstract: Cell membranes play an important role in regulating what goes in and out of the cell. Diffusion‚ the process of movement of substances across the cell membrane from higher concentrations to areas of lower concentration‚ plays an active role in the transport and the regulation through cellular membrane. Sometimes‚ there are cases when cells are placed in hypotonic solutions and substances will diffuse through the cell membrane too much and will result the
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Introduction: This lab helps further our understanding of essential principles behind diffusion and osmosis. Permeability‚ concentration gradients‚ plasmolysis‚ water potential‚ and equilibrium were also concepts that were delved into in this lab. Understanding how diffusion and osmosis works is essential to understanding biology. Each time a cell has something move into or out of it‚ some sort of principle studied in this lab is occurring. Diffusion‚ osmosis‚ and passive and active transport are
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Introduction: Rainwater‚ in most cases‚ is the most pure available source of water‚ something which gives rainwater preference over other available sources of water but more importantly‚ roof drainage pollution is also caused by rainwater. In United States the average amount of rainfall across the country is 35″ and the amount of land that is affected by excess water capable of damaging homes and properties is around 20%. Some of the most common environmental and moisture problems that are faced
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Exercise 1: Cell Transport Mechanisms and Permeability: Activity 1: Simulating Dialysis (Simple Diffusion) Lab Report Pre-lab Quiz Results You scored 100% by answering 4 out of 4 questions correctly. 1. The driving force for diffusion is You correctly answered: b. the kinetic energy of the molecules in motion. 2. In diffusion‚ molecules move You correctly answered: a. from high concentration to low concentration. 3. Which of the following dialysis membranes has the largest pore size? You correctly
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stimulus strong enough to generate a nerve impulse has been given. The stimulus triggers chemical and electrical changes in the neuron. Before an impulse is received‚ a resting neuron is polarized with different charges on either side of the cell membrane. The exterior of the cell is positively charged with a larger number of sodium ions present compared to the interior of the cell. The interior of the cell is negatively charged since it contains more potassium ions than the exterior of the cell.
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NEURAL CONTROL AND COORDINATION CHAPTER 21 NEURAL CONTROL COORDINATION 21.1 Neural System 21.2 Human Neural System 21.3 Neuron as Structural and Functional Unit of Neural System 21.4 Central Neural System 21.5 Reflex Action and Reflex Arc 21.6 Sensory Reception and Processing 315 AND As you know‚ the functions of the organs/organ systems in our body must be coordinated to maintain homeostasis. Coordination is the process through which two or more organs interact and
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and Permeability Name: Gayane koshkakaryan Lab Time/Date: Friday 8am Activity 1 Simulating Dialysis (Simple Diffusion) 1. Describe two variables that affect the rate of diffusion. a. Molecular weight b. Solute concentration 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? a. Urea was unable to diffuse through the 20MWCO membrane because urea is a big molecule and the 20MWCO membrane pore
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process of the facilitated diffusion of glucose through a selectively permeable membrane. Introduction: Experiment #1 and #2 are meant to show the processes of Simple and Facilitated diffusion. Both the solutes and water were used to show how they diffuse through a semi permeable membrane. In experiment #1 the process of using the solute and deionized water shows how much of the solute is passed through the membrane. In experiment #2 the rate of facilitated diffusion relied on the amount of carrier
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