and moving in molecules. They collide because they are moving at a random pace. The temperature causes diffusion. 2. Define the terms hypertonic‚ hypotonic‚ and isotonic solution. * Hypertonic: Having increased pressure or tone‚ in particular. * Hypotonic: Having reduced pressure or tone‚ in particular. * Isotonic solution: a solution having the same osmotic pressure 3. Explain the similarities and differences between diffusion and osmosis. Both are the movement of a substance
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Cell Membranes and Transport Hands-On Labs‚ Inc. Version 42-0033-00-01 Exercise 1: Diffusion Observations Data Table 1: Rate of diffusion in different temperatures | | ºC | Minutes | Temperature | InitialTemp. | InitialColor | 5 | 10 | 15 | 20 | 25 | 30 | 60 | Cold | 10°celsius | clear | clear | clear | clear | clear | clear | light purple | light purple | Ambient | 25°celsius
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shift‚ treat with diuretics and fluid restriction or sodium restrictions‚ record i&o’s‚ bounding pulse‚ JDV‚ crackles in lungs (from PE)‚ SOB‚ PITTING EDEMA Fluid Volume Deficit (Hypo-Volemia): shift from plasma into ICF with sodium loss‚ treat with isotonic fluids‚ blood products for blood loss‚ low BP‚ increase HR‚ weak thready pulse‚ no JVD‚ increase RR‚ decreased LOC‚ cool skin POOR SKIN TURGOR SIADH: decrease in plasma osmalility and urine output‚ too much ADH‚ hyponatremia Diabetes Insipidus:
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“Is Starch Permeable in Cells? Abstract This report presents the weights of 3 samples of water with various amounts of solute after the use of osmosis. Three different tests were performed‚ each with a beaker of water containing varying amounts of starch from 30% concentration (12.5 grams of water) to 15% concentration (9.5 grams of water)‚ and then 0% (10.5 grams of water). To start this experiment‚ we put water into a make-shift dialysis tube‚ a type of semi-permeable membrane tubing made
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Overview: Life at the Edge The plasma membrane separates the living cell from its nonliving surroundings. This thin barrier‚ 8 nm thick‚ controls traffic into and out of the cell. Like all biological membranes‚ the plasma membrane is selectively permeable‚ allowing some substances to cross more easily than others. Concept 7.1 Cellular membranes are fluid mosaics of lipids and proteins The main macromolecules in membranes are lipids and proteins‚ but carbohydrates are also important. The
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Word | Definition | Clue | Cell Theory | A theory that states that all organisms are made of cells‚ all cells are produced by other living things‚ and the cell is the most basic unit of life. | | Cytoplasm | A jellylike substance that contains dissolved molecular building blocks- such as proteins‚ nucleic acids‚ minerals‚ and ions. | | Organelles | Structures that are specialized to perform distinct processes within a cell. | | Prokaryotic Cells | Cells that do not have a nucleus or other
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the cells with a rigid wall that can withstand the pressure that builds up inside the cells dues to the inflow of water by osmosis. Paramecium Use contractile vacuoles to actively pump water out of the cells. Humans Surround the cells with an isotonic extracellular fluid. If 2 solutions have unequal concentrations of solutes‚ the solution with the higher solute concentration is called hypertonic and the solution with the lower solute concentration is called hypotonic. Which of the following
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line crosses the X-axis? What is the concentration of sucrose in your potato? 8. Fill in the blanks in the statement below using the following list: Net gain‚ low‚ hypertonic‚ exit‚ osmotic‚ enter‚ less‚ hypotonic‚ high‚ more‚ net loss‚ isotonic (not all words are used) If a cell is placed in a ________ solution‚ it has _____________ solute in solution than the surrounding fluid‚ and will therefore experience a __________ of water to its surroundings. This cell has ______________ water
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surrounding the cell there will be a dynamic equilibrium between the number of water molecules entering and leaving the cell‚ hence the cell does not change size. For example‚ red blood cells in the blood plasma retain their shape because of the isotonic nature of the plasma. If the concentration of water is higher within the cell then that of outside the cell‚ there will be a net movement of water out of the cell‚ this will cause the cell to shrink and shrivel. Within animal cells there is no
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Osmosis The purpose of this lab is to study how membranes of plant and animal cells react when exposed to different solutions. The first experiment involves purple onion skin and the second involves rat blood in various solutions. I needed to understand certain terms before preforming this lab to be able to efficiently explain what is happening to the cells. Diffusion is the tendency of a substance to move down its concentration gradient from a more concentrated to a less concentrated area.
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