Cell Membrane Transport
Introduction
In this Lab the students dealt with Osmosis, movement of water molecule or solvent from a high concentration to a low concentration, through selective permeability, a protective barrier that provide some particle the 'direct ' passage in and out of the plasma membrane ( Lacerda L.2011) Allowing some molecules enter and exit the cell membrane, to create a balance in concentration inside and outside of the cell, by doing so the cell often become hypotonic, where the concentration outside the cell is higher than the concentration inside the cell, therefore causing the swelling of that cell. When cell was placed the the deionized water environment, hypothesis was made that the cell will become hypotonic and swell up as the time increased.
“Diffusion is a passive process in which the random mixing of particles in a solution occurs because of the particle 's kinetic energy “(Allen C. 2006), and is subjected to detect the presence of each of the substances given in the biochemical testing, the increase in temperature, and different reagent used are some aspect that could cause the difference of diffusion in certain solution. It was clear that the protocols Glucose, Albumin, NaCl, and Starch would be tested positive in the cytoplasm solution through diffusion, meaning they are present, as the report directed, and hypothesis was made that the same protocols would be tested negative, meaning not being presence in the environment.
Rate of diffusion was discussed in the Diffusion in Gel, Liquid, and Air. The change in temperature affects the rate of diffusion in Gel and Liquid. The hypothesized was made that the warmer the temperature is, the faster the diffusion, because heat provide the molecules with more kinetic energy which is the energy of motion, while the lower the temperature is, the slower the diffusion, because energy is not provided, while Diffusion rate could also be slow down because of the increase in viscosity in
In this Lab the students dealt with Osmosis, movement of water molecule or solvent from a high concentration to a low concentration, through selective permeability, a protective barrier that provide some particle the 'direct ' passage in and out of the plasma membrane ( Lacerda L.2011) Allowing some molecules enter and exit the cell membrane, to create a balance in concentration inside and outside of the cell, by doing so the cell often become hypotonic, where the concentration outside the cell is higher than the concentration inside the cell, therefore causing the swelling of that cell. When cell was placed the the deionized water environment, hypothesis was made that the cell will become hypotonic and swell up as the time increased.
“Diffusion is a passive process in which the random mixing of particles in a solution occurs because of the particle 's kinetic energy “(Allen C. 2006), and is subjected to detect the presence of each of the substances given in the biochemical testing, the increase in temperature, and different reagent used are some aspect that could cause the difference of diffusion in certain solution. It was clear that the protocols Glucose, Albumin, NaCl, and Starch would be tested positive in the cytoplasm solution through diffusion, meaning they are present, as the report directed, and hypothesis was made that the same protocols would be tested negative, meaning not being presence in the environment.
Rate of diffusion was discussed in the Diffusion in Gel, Liquid, and Air. The change in temperature affects the rate of diffusion in Gel and Liquid. The hypothesized was made that the warmer the temperature is, the faster the diffusion, because heat provide the molecules with more kinetic energy which is the energy of motion, while the lower the temperature is, the slower the diffusion, because energy is not provided, while Diffusion rate could also be slow down because of the increase in viscosity in
References: 1. Lacerda L, Russier J, Pastorin G, Herrero M. Antonia, Venturelli E, Dumortier H, Al-Jamal K.T., Prato M, Kostarelos K, Bianco A. 2011. "Translocation mechanisms of chemically functionalised carbon nanotuves across plasma membranes". Biomaterials [Internet]. [ cited 2012 April 10]: (0142-612),33 (11), p.3334 available from HTTP://ezproxy.twu.edu:2055/10.1016/j.biomaterials.2012.01.024 2. Novak I.L., Kraikivski P., Slepchenko B. M., 2009. "Diffusion in Cytoplasm: Effects of Excluded Volume Due to Internal Membranes and Cytoskeletal Structures". Biophysical Journal [Internet]. Volume 97, issue 3. Elsevier Inc. [cited 2009 January 18]. Available from http://ezproxy.twu.edu:2150/science/article/pii/S0006349509010455 3. Valderama-Bravo C., Gutierrez-Cortez E., Contreras-Padilla M., Rojas-Molina I., Mosquera J.C., Rojas-Molina A., Beristain F. Rodriduez-Garcia M.E. 1995. "Constant pressure filtration of lime water (nejayote) used to cook kernels in maize processing.". Journal of food engineering [Internet]. [Cited 2012 June 01]: (0260-8774), 110 (3), p. 478. Available from: http://ezproxy.twu.edu:2127/science/article/pii/S0260877411006741 4. Simon B., 2012 November 1. Error Estimates for Calculated Glomerular Filtration Rates. Ezproxy.twu.edu. Available from: http://ezproxy.twu.edu:2084/ehost/detail?sid=5e1f2206-f49d-4f31-a933-c58d5141985a%40sessionmgr4&vid=14&hid=8&bdata=JnNpdGU9ZWhvc3QtbGl2ZQ%3d%3d#db=a9h&AN=67635304 5. Cell Membrane Transport. Protocol- Department of Biology, Zoology Laboratories. 2011. Available form: Texas Woman 's University, Denton, Texas 6. Allen C., Valerie H. 2006. Laboratory Manual for Anatomy and Physiology. 3rd ed. New York: J Wiley. P. 737 7. Tortora G. J., Derrickson B. Principles of anatomy and physiology. 12th ed. John Wiley & Sons, Inc. 2009. New York: P66