2) VMD :- It is a program for molecular visualization‚ modelling and analysis of biological systems like proteins‚ nucleic acid‚ and lipid bilayer assemblies. VMD also gives option to work with volumetric data‚ sequence data‚ and arbitrary graphics objects. VMD includes Tcl and Python interpreters‚ so users can run their own script of these. VMD is preferred over others program because of its following unique features :- Can operate on multi-gigabyte molecular dynamic trajectories. Interoperability
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have not completed the Pre-lab Quiz. 09/20/11 page 1 Experiment Results Predict Question: Predict Question 1: The molecular weight of urea is 60.07. Do you think urea will diffuse through the 20 MWCO membrane? Your answer : c. No‚ not at all. Predict Question 2: Recall that glucose is a monosaccharide‚ albumin is a protein with 607 amino acids‚ and the average molecular weight of a single amino acid is 135 g/mole. Which of the following will be able to diffuse through the 200 MWCO membrane
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scientific paper investigates my hypothesis that "Higher molecular weight produce faster diffusion". Diffusion is a process of equalization which involves movement of molecules from an area of high concentration to an area of low concentration (Biology 101.1). As Thomas Graham (1831-1833) found out on his study that gases of different nature diffuse with each other‚ it is a challenge as to how true it is to solids. The effect of molecular weight on the rate of diffusion was assessed using Methylene
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Factors that Affect Soil Nutrients Nutrient availability can be influenced by several factors and these include: 1. Soil Ph: The relative concentration of the hydrogen irons and or hydroxyl irons may either increase or decrease nutrient availability. 2. The Presence of Other Nutrients: The essence of the various mineral salts will either increase or decrease the other mineral salts in the soil. 3. Leaching: This encourages the draining of mineral salts from the topsoil to subsoil thereby depriving
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Farming on a Whole New Level Although people have worked in agriculture for more than 10‚000 years‚ advances in technology assist with maintaining and protecting land‚ crops‚ and animals. The demand to keep food prices affordable encourages those working in the agriculture industry to operate as efficiently as possible (Newman and Ruiz 33-47). Almost all people and companies in this industry have many acres of land they must maintain‚ and it is not always feasible for farmers to take frequent
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The Effects of Osmosis and Diffusion The experimentation of last week’s lab was in order to test the many effects of diffusion and osmosis amongst four experiments. One such experiment was testing the effects of molecular weight on diffusion in relation to the use of Agar. The methods performed included the use of two acids‚ HCl and acetic acid. Both acids were placed into an Agar-filled dish and‚ over increments of 15 minutes‚ data collection was taken based off the diffusion rate and the
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done over simple diffusion‚ facilitated diffusion‚ osmosis‚ filtration‚ and active transport by changing and observing different variables and how they affect transport through the membrane. Obtained was the understanding of the changing of the molecular weight cut off in a membrane‚ and how it does not play a part directly in changing the rate of diffusion‚ but instead determined if diffusion was accomplishable at all. Knowledge on the size of molecules in relation to how they behave through these
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Valence-Shell Electron-Pair Repulsion Theory (VSEPR) Predicting the Shapes of Molecules There is no direct relationship between the formula of a compound and the shape of its molecules. The shapes of these molecules can be predicted from their Lewis structures‚ however‚ with a model developed about 30 years ago‚ known as the valence-shell electron-pair repulsion (VSEPR) theory. The VSEPR theory assumes that each atom in a molecule will achieve a geometry that minimizes the repulsion between
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Free range farming can be controversial. It is expensive‚ but also offers a better life for animals. In this discussion you will be informed about the good side of free range farming‚ the negative aspects of free range farming. I will also inform you about the costs of both. There are a lot of good things about free range farming. One of many is that in the time span that the animals are living‚ they get a decent life. They get to interact with other animals and live a life like normal animals
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opposite sides of a membrane. Cells have been know to explode as a result of this effect. Wikipedia.org‚ "The World’s Encyclopedia" really says it best Search ’Molecular diffusion" "Molecular diffusion‚ often called simply diffusion‚ is a net transport of molecules from a region of higher concentration to one of lower concentration by random molecular motion. The result of diffusion is a gradual mixing of material. In a phase with uniform temperature‚ absent external net forces acting on the particles‚
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