against the gradient‚ it is active and requires energy. Passive transport describes the movement of substances down a concentration gradient and does not require energy consumption. There are many types of passive transport‚ for example: Diffusion‚ diffusion is the net movement of substances from an area of higher concentration to an area of lower concentration. This movement occurs as a result of the random and constant motion characteristic of all molecules‚ atoms‚ or ions (due to kinetic energy)
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LOVELY PROFESSIONAL UNIVERSITY CAPSTONE PROJECT REPORT TOPIC- ANTIMICROBIAL ACTIVITY OF DIFFERENT TYPES OF HONEY. PROJECT GUIDE- SUBMITTED BY- DR. AKSHAY GARG MOHIT KUMAR DEPT. OF BIOTECHNOLOGY REG. NO.- 10800037 ROLL NO- RB1R07B02 B.TECH BIOTECH.(8th sem.)
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EFFECT OF USED OIL IN Trichoderma harzianum A Thesis Presented to the Faculty‚ Special Science Class Iloilo National High School La Paz‚ Iloilo City In the Partial Fulfillment in the subject Research III Sheree Joie Montomo Polonan January 2013 Chapter 1 Introduction of the Study Chapter 1 is divided into five parts: (1) Background of the Study‚ (2) Statement of the Problem and Hypothesis‚ (3) Significance of the Study‚ (4) Definition of Terms
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down its concentration gradient from the air to the blood‚ while at the same time carbon dioxide can diffuse down its concentration gradient from the blood to the air. The sheer number of alveoli inside the lungs means that the surface area for diffusion to take place is huge. In humans‚ carbon dioxide waste is breathed out through the lungs. Ammonia produced from cells is converted to urea as it is much less toxic and is excreted through the kidneys. Fish: Gas exchange is more difficult
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fungus grows. Therefore optimum temperature will increase growth. The diffusion rate of these dead organic matters is affected by temperature. According to Kinetic theory higher temperatures increase the energy and therefore the movement of the molecules‚ increasing the rate of diffusion‚ therefore increasing growth. Lower temperatures decrease the energy of the molecules‚ thus decreasing the rate of diffusion. The optimum diffusion rate varies with different fungi’s. The growth of Aspergillus oryzae
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MODELING LEACHATE MIGRATION FROM A LANDFILL December‚ 2003 1 INTRODUCTION A two-dimensional‚ steady state transport modeling using MODFLOW/CTRAN was carried out following the particle tracking calculations to simulate potential contamination for leachate migration from Gibraltar landfill. Gibraltar landfill was a disposal waste site in Bogotá (Colombia) until 1988. The site presented problems related to contamination for leachate migration after its closure‚ since the operation
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*Passive processes Diffusion: The Principle Diffusion – When molecules and ions level out concentration. Equilibrium – When the substance is evenly spread out through the substance and the concentration gradient disappears. Simple Diffusion – Substances diffuse across the membrane in one of two ways: Lipid-soluble substances diffuse through the lipid bilayer. Ions diffuse through the pores of ion channels formed by integral proteins. Facilitated Diffusion – When substances that cannot
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nutrients throughout their bodies. The distribution of these nutrients must remain constant otherwise the organism will not be able to function at full capacity‚ which may lead to its death. It is for this reason that osmosis and other forms of diffusion are of prime importance to all living organisms‚ because they influence the distribution of nutrients throughout the
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Using dialysis tubing to model diffusion of a cell membrane and investigating the influence of solute concentration on osmosis Purpose * Discover how dialysis tubing diffuses the cell membrane * Explore the effect of solute concentration on osmosis Background A cell membrane is a very significant function in the human body. In one sense‚ it is used as a barrier to keep the enzymes‚ DNA‚ and metabolic pathways that bundles everything together. Cell membranes are also used as a gateway
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6 2. MOLECULAR DIFFUSION 7–73 2.1 Concentration‚ Velocity and Flux 8 2.2 Fick’s Law 11 2.3 Steady State Molecular Diffusion through a Constant Area in a Binary Gas Mixture 14 2.4 Multicomponent Diffusion 30 2.5 Gas-Phase Diffusion Coefficient: Measurement and Prediction 36 2.6 Molecular Diffusion in Liquids 42 2.7 Diffusion through a Variable Area 48 2.8 Knudsen Diffusion‚ Surface Diffusion and Self-Diffusion 57 2.9 Applications of the Principles of Molecular Diffusion 59 Notations 59
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