• Physioex 9 exercise 1
    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...
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  • Exercise 1
    Activity 1: 1. Did any solutes move through the 20 MWCO membrane? Why or Why not? 2. Did Na+Cl- move through the 50 MWCO membrane? Activity 2: 1. Are the solutes moving with or against their concentration gradient in facilitated diffusion? 2. What happened to the rate of facilitated diffusion...
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  • Mitchy
    body water content and describe the effect of each factor. 2. Indicate the relative fluid volume and solute composition of the fluid compartments of the body. 3. Contrast the overall osmotic effects of electrolytes and nonelectrolytes. 4. Describe factors that determine fluid shifts in the...
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  • Osmosis and Diffusion
    Diffusion is the random movement of molecules from an area of higher concentration to an area of lower concentration. This will occur until the two areas reach a dynamic equilibrium. When this dynamic equilibrium is reached the concentration of molecules will be approximately equal and there will be no net...
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  • Physio Ex 9.0 Activity 1 Cell Transport Mechanisms and Permeability
    1. Explain one way in which facilitated diffusion is the same as simple diffusion and one way in which it is different from simple diffusion. Facilitated diffusion is the same as simple diffusion in that they are both passive and go down (or with) the concentration gradient. It is different...
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  • Review Sheet
    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? ...
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  • Cell Transport Mechanisms and Permeability
    that has a lower concentration of solutes compared to another solution _G___ term used to describe a solution that has a higher concentration of solutes compared to another solution _A___ the movement of molecules from an area of higher concentration to an area of lower concentration as a result of...
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  • lalalala
    INTRODUCTION When a solute is dissolved in a solvent, the properties of the solvent are changed due to a different set of a interparticle forces. In the pure solvent, the interaction are between solvent molecules only. Upon the addition of the solute,new interaction are created between the solute and the solvent...
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  • Determining the Water Potential of Potato Cells
    must be determined for a given temperature and pressure. In this exercise you will determine the water potential of potato cells at room temperature and ambient pressure by placing cores of potato tissue in sucrose solutions of different concentrations and measuring the net movement of water in each...
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  • Chemistry
    depend on the concentration of solute particles but NOT on their identity and also, it depends on the lowering of the escaping tendency of solvent particles by the addition of solute particles. *Vapor Pressure Lowering * The escaping tendency of a solvent is measured by its vapor pressure. * Vapor...
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  • Chemistry Final Exam Study Guide
    by molecules Kinetic-Molecular Theory – * Particles of matter are always in motion * Explains the properties of solids, liquids, and gases in terms of the energy of particles & the forces between them Theory of Gases – * Ideal gas – a hypothetical gas that perfectly fits all the assumptions...
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  • Biology Core Notes
    To perform at a specific temperature of pH, they are denatured out of this. The rate of reaction is proportional to enzyme concentration, providing that the substrate concentration is high & temperature & pH are constant Chemical composition: proteins (amino acids) held together by peptide bonds....
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  • Molecular Weight
    as animal cells and Hydrilla leaf cells as plant cells to solutions on different osmotic concentrations. Each were placed under hypertonic, hypotonic and isotonic environments. The movement of the solvents and solutes of each solution across the membrane was then observed. The changes on the volume...
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  • Hsc Biology
    substrates- 7 1.1.3: Explain why the maintenance of a constant and stable internal environment is important for optimal metabolic efficiency- 8 1.1.4 and 1.1.5: Describe homeostasis as the process by which organisms maintain a relatively stable internal environment and explain that it consists of...
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  • Biology Notes- Maintaining a Balance
    * The products are the substances that the substrate(s) become. One substrate can be split, or two substrates can be joined * Models to explain specificity: * The lock and key model * The Lock and Key Model suggests that the substrate fits exactly into the active site of the...
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  • Cell Transport Mechanisms and Permeability
    was accomplishable at all. Knowledge on the size of molecules in relation to how they behave through these mechanisms was also learned. The smaller solutes tend to be consistently more successful in all forms of transport. To understand the cell transport is to, to an extent, understand the cell and indirectly...
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  • Nutirion on 13
    many electrolytes. The intracellular fluid is not continuous and therefore the content varies in solute and concentrations. INTRACELLULAR: Osmotic equilibrium is maintained so that each particle of solute throughout the body is surrounded by the same number of water molecules. Since cell membranes are...
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  • Maintaining a Balance Bio
    hydrogen peroxide (toxic) converts it to water and oxygen Identify the pH as a way of describing the acidity of a substance * pH – measure of the concentration of hydrogen ions in a solution * pH 7 – neutral (water) * pH 7 – basic * Most biological fluids have pH 6-8 * e.g. human...
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  • Assignment: Vascular Physiology
    _______________________________ 1. The pulmonary circulatory system a. receives the same cardiac output as does the systemic circulation. b. has the same arterial pressures as does the systemic circulation. c. has the same total peripheral resistance as does the systemic circulation. d. has a main function of...
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  • Hsc Biology Great Notes!
    * The products are the substances that the substrate(s) become. One substrate can be split, or two substrates can be joined * Models to explain specificity: * The Lock and Key Model suggests that the substrate fits exactly into the active site of the enzyme like a key fits into a...
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