than___ a) Lead b) Zinc c) Platinum d) Both (a) and (b) 11. The atomic number of natural radioactive element is __ a) 82 c) Not defined d) at least 92 12. Kilowatt-hour is the unit of ___ a) Potential difference b) Electric power c) Electric energy d) Charge 13. The potential difference required to pass a current 0.2 A in a wire of resistance 20 ohm is ___ a) 100v b) 4v
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EFFECT OF CHANGES IN TEMPERATURE AND SDS CONCENTRATION ON THE STRUCTURE OF BEETROOT CELL MEMBRANES. Introduction Cellular Membranes or cell membranes are biological membranes that separate the interior of a cell from the outside environment. Cell membranes are selectively permeable to ions and some molecules and control the movement of substances in and out of the cell. (Danyk‚ 2013/14) Cell membranes separate and organize chemicals and reactions within cells by allowing selective passage
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Aim To investigate the effects of increasing salinity on potato cell mass. Background Information This experiment is based upon osmosis. Osmosis can be defined as the net movement of water molecules from a region with high concentration to a region with low concentration. This movement must take place across a partially permeable membrane such as a cell wall‚ which lets smaller molecules such as water through but does not allow bigger molecules to pass through. This process will take place until
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Aim: To investigate how effect of Detergent Concentration (cont.) has on Membrane permeability of Beetroot cells. Hypothesis: I predict that as detergent concentration increases‚ the solution will become less clear‚ plus mass increases. The increases in mass will indicate that the water potential of the Beetroot cell is lower than that of the surrounding sucrose solution. The Beetroot discs will become flaccid and decrease in mass if the water potential of the surrounding solution is lower than
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Alterations in Fluids‚ Electrolytes‚ and Acid-Base Balance Composition & Compartment Distribution of Body Fluids ← Body fluids are distributed between the intracellular fluid (ICF) and extracellular fluid (ECF) compartments. The ICF compartment consists of fluid contained within all of the billions of cells in the body. It is the larger of the two compartments‚ containing approximately two thirds of the body water in healthy adults. ← The remaining one third of body water is in
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INTRODUCTION Osmosis is the movement of water molecules from high concentration to low concentration through semipermeable membranes‚ caused by the difference in concentrations on the two sides of a membrane (Rbowen‚ L.). It occurs in both animals and plants cells. In human bodies‚ the process of osmosis is primarily found in the kidneys‚ in the glomerulus. In plants‚ osmosis is carried out everywhere within the cells of the plant (World Book‚ 1997). This can be shown by an experiment with potato
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find the concentration (mole/dm3 (M)) of solute in a potato cell by using the process of osmosis and different concentrations of sucrose solution. Background information Osmosis is diffusion of water across a partially permeable membrane. It moves from a solution with less solute concentration (high water potential) to a solution with more solute concentration (low water potential). The one with a high water concentration is called a hypotonic solution and the low water concentration is called
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THE POTENTIAL OF SPOILED KABAPINE PASTE AS AN ELECTROLYTE IN COMMON DRY CELL _____________________________________ A Science Investigatory Project Presented to the Faculty of the Tupi National High School Science Department ______________________________________ In Partial Fulfilment of the Requirements in Science and Technology IV _______________________________________ by: JESON E. BALLEZA RENZO RONZ S. MATULAC ISAIAH JOSEF C. PALMES MARY FRANCES I. TORIBIO JORIEL THERESA
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Advanced Pathophysiology & Health Assessment NUR5703 2011 Pre-course Learning Objectives: Fluids and Electrolytes: 1. Identify and describe the composition of the fluid compartments within the body Either Intracellular fluid (ICF- 2/3 of the body’s water) or extracellular fluid (ECF -one third of the body’s water). The two main extracellular fluid compartments are the interstitial fluid and the intravascular fluid‚ which is the blood plasma. Other ECF compartments include the lymph and
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Migration Potential in Breast and Lung Cancer Cells in presence of antimigratory therapeutic agent. Marco Brudik and Paloma Aranzazu Godinez Melgoza Medical and Pharmaceutical Biotechnology Program‚ University of Applied Sciences IMC FH Krems. Abstract. The new trends on research points to study the process of tomour-cell invasion and metastasis for developing and testing of anti-migratory agents. The present study develops a quantitative determination of the cancer cell’s migratory potential by Cell
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