Facilitated diffusion

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  • Tap Water Experiment

    As stated originally, our hypothesis for the laboratory experiment was that there is an inverse relationship between the percent abundance of tap water in a mixture and the size (diameter) (cm) of the bubbles produced from the respective mixture. However, our experimental process yielded just the opposite results- a direct relationship between the percent abundance of tap water in a mixture and the size (diameter) (cm) of the bubbles produced from the respective mixture- meaning that when there…

    Words: 615 - Pages: 3
  • Why Is Osmoregulation Important

    Why the system is important? The purpose of osmoregulation is to maintain a constant, optimal osmotic pressure within the body or cell. (Biology online, 2009). It allows the body to maintain a suitable concentration of solutes and of water in body fluids. Water is needed in the body for the reasons mentioned above such as providing trasport of substances, acting as a solvent and for use in evaporative cooling mechanisms. This means as humans we must maintain an optimum level of water in the…

    Words: 564 - Pages: 3
  • Homeostasis: Cell Membrane Proteins

    Diffusion is the movement of solutes and is a passive transport where particles move from higher concentration regions to lower. The cell membrane selectively restricts diffusion so ions move across the membrane by crossing the lipids or going through a channel. "Alcohol, fatty acids, and steroids can enter cells easily, because they can diffuse through the lipid portions of the membrane." (Anatomy and Physiology Textbook 86) The rate of diffusion is affected by surface area…

    Words: 910 - Pages: 4
  • Lagoa Vermelha Case Study

    Currently, Lagoa Vermelha has a depth of 1.0 m, with a small central core reaching a depth of 1.4 m, while Hohn et al. (1986) described a water column up to 1.70 m. In the present study, there was a greater tendency of accumulation of fine material, with little concentration of carbonates, at the highest depths. As expected, the accumulation of fine sediment was also associated with higher concentrations of organic matter. The results obtained in the bathymetric survey showed occurrence of a…

    Words: 1038 - Pages: 5
  • The Importance Of Turbidity And Atomic Spectroscopy

    Turbidity: - Turbidity is a degree of water clarity. Turbidity is defined as an “expression of the optical property that causes light to be scattered and absorbed rather than transmitted in straight lines through the sample”. Nephelometers are used to measure the intensity of light scattered by contaminants present in water such as suspended and colloidal solids like clay, silt and microscopic organisms. Turbidimeters using the principle of nephelometer compare the light scattered due to…

    Words: 967 - Pages: 4
  • Starch Osmosis Experiment

    Introduction The experiment will be working with diffusion and osmosis; it will test if the starch will travel through the semi permeable membrane (dialysis tube) causing osmosis. Diffusion is when a substance is highly concentrated turns into a lower concentration, and is evenly distributed throughout. An example of diffusion is when you cook and the smell of food flows until it in dynamic equilibrium; which is the even distribution of the substance. Osmosis is the movement through a semi…

    Words: 1042 - Pages: 5
  • Darcy's Law: Nonwoven Membrane Resistance In The Separation Process

    Darcy’s Law expresses flux of water without particles through a nonwoven membrane as follows: J=∆p/(μ.R_m ) (4) where, J is the permeation flux (m3/m2s), ∆p is the transnonwoven pressure (Pa), μ is the viscosity (Pa.s), and Rm is the clean nonwoven membrane resistance or intrinsic resistance (1/m). Since fouling is going to take place in the separation process, the permeation flux will always be lower than the flux given by Eq. 4. Cake resistance -formed by cake layer- and fouling resistance…

    Words: 1012 - Pages: 5
  • Blood Cell And Osmosis Experiment

    move in and out without expanding energy; which is called passive transport. Think about molecules and ions move in motion in a solution. When a random motion cause a net movement of a substance of high concentration to low concentration is called diffusion. That is where the molecules spread out evenly throughout the area. When you have a difference in the concentration in a distance is called a concentration gradient. Random movement of molecules are called Thermal Molecular Motion. There are…

    Words: 1900 - Pages: 8
  • Osmosis And Diffusion Essay

    process of moving soluble molecules across a membrane is referred to as passive transport. For this type of transport chemical energy is not necessary. Two of the main types of passive transport that the human body utilizes are osmosis and diffusion. Diffusion is the movement of a hydrophobic substance across a semi-permeable membrane without the use of cell energy from a gradient area of higher concentration to an area (either inside or outside of the cell) with a lower concentration…

    Words: 1000 - Pages: 4
  • Egg Osmosis Essay

    Movement of materials from areas of high concentration to areas of low concentration id diffusion. Osmosis is diffusion of water. Tonicity compares the environment inside of a membrane with the outside. When a membrane bound structure has a higher concentration of water on the outside of the membrane than the inside is hypotonic. Hypertonic is when a membrane bound structure has a higher concentration of water on the inside of the membrane than the outside. When something is isotonic the inside…

    Words: 583 - Pages: 3
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