• Osmosis
      2.5  C  4  4.3  7.5  D (sucrose)  4  3.6  -10  E  4  3.5  -12.5  F  4  3.7  -7.5  These results show clear evidence of osmosis. In tubes D-F, water was  lost (hence the potato chips decreased in size) because the water  potential is lower...
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  • Osmosis
    a solution where the concentration of sugar is more than the concentration of water then the potato will increase size/mass, but if I increase the concentration of water this will result in the plant tissue increasing in size/mass more quickly compared. For example if have two potato cylinder and I...
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  • Diffusion
    Potential In this part of the exercise you will use potato cores placed in different molar concentrations of sucrose in order to determine the water potential of potato cells. First, however, we will explore what is meant by the term "water potential." Botanists use the term water potential when...
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  • Same Sex Marriage
    Plasmolysis of potato cells Introduction: The aim of this experiment was to determine the different affect that distilled water (DW) and sodium chloride (NaCl) have on plasmolysis in potato cells. Plasmolysis is the contraction of the protoplasm in a living cell when water is removed by osmosis...
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  • Osmosis
    model of a membrane system. 2. Investigate the effect of solute concentration on water potential as it relates to living plant tissue. Background Information: Molecules are in constant motion; they tend to move from areas of high concentration, to areas of low concentration. This broad principle...
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  • Tuber Cells
    DETERMINATION OF THE WATER POTENTIAL OF POTATO TUBER CELLS. Method. Five sucrose solutions with varying molarity and one control containing distilled water were prepared and poured into test tubes. The potato discs were dried, weighed and added to the test tubes. The discs were then weighed...
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  • Investigating Water Potential of Swed
    eInvestigating water potential of swede The aim of our experiment was to investigate the water potential of swede and then use our results to help us determine the water potential of plant tissue. This overall flow of water from a dilute area of high water potential to a more concentrated...
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  • Chardakov method
    determine the water potential of four different plant cells (potato, celery, carrot, and apple).  The Gravimetric technique for measuring water potential is simple to perform and doesn't require expensive equipment. In both techniques, tissue samples are incubated in a series of solutions of known osmotic...
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  • Lab Report Tansport Across Membrane
    solution (0.88% (w/v) sodium chloride) which is isotonic to the cell sap of the potato cell will not produce any percentage change in the mass of the potato.The water moves in and out of the cell at the same rate and the potato strip remains turgid. We can also conclude that the solute potential is...
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  • Agrobacterium Rhizogenes
    into soil water and becomes distributed throughout the root zone in which the progeny tubers are growing. Bacterial cells enter lenticels of the progeny tubers and either become inactive, or when conditions are favorable, initiate decay. In a poorly managed potato storage environment, blackleg...
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  • Light-Induced Transformation of Amyloplasts Into Chloroplasts
    of Biological Sciences, University of Maryland Baltimore County, Catonsville, Maryland 21228 ABSTRACT The transformation of amyloplast into chloroplasts in potato (Solawum tuberosum L.) tuber tissue can be induced by light. Excised potato tuber discs illuminated with white light of 3000 lux...
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  • Grace
    , the purpose was to measure the water potential of potato cells. In section 1A, the dialysis tubing represented the cell membrane. Its tiny holes made the tubing selectively permeable so that it most closely resembled a cell membrane. Only some small substances could pass through it. A...
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  • Proposal
    spirit. Objectives The group has the following objectives in conducting the market study: * To generate profit from simple ingredients made of sweet potato or yams. * To convince and persuade the consumers to purchase our product. * To prove that there is a potential market for the...
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  • essay
     Practical 1 - Investigation into size and scale of microscopic tissues This practical focuses on microscope technique and using graticules and stage micrometers to determine size and scale in biological cells and tissues. Intended learning outcomes By the end of this practical you...
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  • osmosis and diffusion experiment
    concentration has a higher water potential and the higher solute concentration has less water potential. AIM: To investigate the water potential of potato tuber cells using the weighing method. APPARATUS: Cork Borer 6 Test tubes 6 Syringes Small Tile Ruler 6 Filter papers...
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  • Understanding Wellness
    aid in the construction of these tissues. It is impossible to reliably determine the vitamin requirements of an individual because of differences in age, sex, body size, genetic makeup, and activity. Vitamins are of two types, fat-soluble and water-soluble vitamins. Supplements like A, D, E, and K...
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  • Mid Term Lab Review
    through a membrane. 3. Was the membrane we used permeable to iodine? glucose? starch? How did we determine this selective permeability? What cell properties was it based upon? 4. How was tonicity demonstrated in lab? (two ways) 5. Why were the potato cubes weighed? Tonicity is a comparison, the...
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  • Stpm
    . STPM BIOLOGY STUDENT’S MANUAL 2010/2011 Questions (a) From the two graphs, determine (i) the osmotic concentration of the potato tissues in mol dm−3 of sucrose solution, (ii) the osmotic potential in atm...
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  • Plant Science
    (shell) to reduce water loss. Cortex Tissue: Forming a cylinder of tissue around the outer edge of the stem. Often contains cells with secondary thickening in the cell walls which provides additional support. Vascular bundle: contains xylem, phloem and cambium tissue. Xylem: a longitudinal...
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  • Osmosis
    potential of a solution, the greater the tendency of water molecules to move into it by osmosis. For example, if potato cells are placed in pure water there will be a net influx of water into the cells, since pure water has a water potential of zero and the water potential in the cell is lower or...
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