John Leone Lab Partner(s) Ethan Davis & Ryan Hanna Date: 12/10/14 Instructor: Dr. Chuckran Period: H Plants and Animal Cells Abstract: In this lab‚ you will find out how plant and animal cells are alike and how they are different. The onion elodea cells were both plants‚ so they had a cell wall. The cheek cells were animal cells‚ so they did not have a cell wall. Eukaryotic cells contain structures called organelles that carry out life processes. Eukaryotic cells can be classified by the types of organelles they contain
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conditions do cells gain or lose water? Did water move into the cell or out of the cell while it was surrounded by hypotonic solution? The water moved into the cell‚ because there was less water inside the cell than outside (there were fewer water molecules inside). 2. In which direction did the water move though the cell membrane when the cell was surrounded by the hypertonic solution? The water moved out of the cell because there was a higher concentration of water inside the cell than outside
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Beet Cell Lab Purpose: The purpose of this Lab was to see how much pressure or stress the beet tissue would hold. Hypothesis: I hypothesize that the higher % of the solvent that the higher the colour intensity will be shown on the ph colour scale. The lower the solvent then the less colour shown. Materials: *Test Tubes (4) *Cork Borer *Beets *Water *1% Acetone *50% Acetone *1% Methanol *50% Methanol Procedure: *Cut 4 uniform cylinders of beet using a cork borer with a 5-mm
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Instead‚ many have suggested future recommendations as to make improvements in the discipline. One recommendation is that microscopic hair analysis should almost always precede DNA testing‚ as to utilized hair analysis and comparison as an efficient screening device (1). There have also been efforts towards establishing a more objective value for hair evidence by developing an
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Determination of an Electrochemical Series In electrochemistry‚ a voltaic cell is a specially prepared system in which an oxidation-reduction reaction occurs spontaneously. This spontaneous reaction produces an easily measured electrical potential which has a positive value. Voltaic cells have a variety of uses and you commonly refer to them as a “battery”. Half-cells are normally produced by placing a piece of metal into a solution containing a cation of the metal (e.g.‚ Cu metal in a solution
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Animals In The Research Lab The use of living animals is an important way to solve a medical problem. Researchers continually seek other models to understand the human organism‚ study disease processes‚ and test new therapies. In seeking quicker and not so expensive ways to look for biological information that can be applied to human disease‚ scientists sometimes study simpler things such as bacteria‚ fruit flies and a few other things. Researchers have spent many years learning how to sustain
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Ligia Ramos 11th Grade HL Biology – Ms. Bartels Due Monday October 21st Limitations on Cell Size Research Question: What is the correlation between surface-to-volume ration and ion exchange and how does this relate to cells? Evaluation of Method and Results: Errors/ Limitations: | Suggestions for improvement: | Impact on Results: | Precision - Human error –cutting cubes freely‚ resulting in very different sized cubes‚ especially for the 1cm x 1cm x 1 cm cubes. All the cubes also had slightly
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Scientific Name of Plants Ornamental Perennials The following is a list of the common plant names cross referenced to the scientific name of plants. The list represents some of the most popular varieties of perennial plants. The scientific names of plants is based on taxonomy‚ the science of plant classification. Each name has two parts‚ the genus and the specie. This is referred to as the binomial (two names)system founded by Linnaeus‚ a Swedish botanist. Some species will have a third name‚
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protect the cell from its surroundings‚ the membrane also regulates the movement of substances that go in and out of the cell. This is composed of phospholipid bilayer with embedded proteins. Cell Wall: The cell wall is composed of cellulose‚ this sugar is used as structure and protection. This organelle is only found in plants. The cell wall has three layers the middle lamella‚ primary cell wall‚ and secondary cell wall. The middle lamella contains a polysaccharide that binds cells to one another
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Plant-Animal Coevolution Evolution Charles Darwin gave what could be described as a loose definition of evolution when he wrote “descent with modification” (Darwin‚ 1859). Evolution is defined more specifically as a change in the genetic composition of a population‚ from generation to generation (Reece et al.‚ 2011). In this investigation into coevolution‚ in particular plant-animal coevolution‚ the adaptations and reasons for these adaptations in a specific example of plant-animal coevolution will
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