TRANSPORT IN MAMMALS Blood is a connective tissue and every connective tissue consists of cell‚ ground substance or matrix and fibres. For blood‚ it has cells‚ matrix in the form of plasma and fibres in the form of fibrin. In transportation‚ the surface area to the volume ratio of organisms contributes to the rate of movement of materials. For example in Hydra‚ and flat worms‚ the ratio is so high so simple diffusion can allow substances to reach all tissues easily. If the ratio is low‚ in mechanisms
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Courtney Cubine 6/19/13 June 20‚ 2013 Separation of a Mixture of Solids Purpose: The purpose of this experiment was to help the student learn how to separate a mixture of multiple different solids and determine the percentage of each component of the mixture. Procedure: I started off by removing the iron using the magnet‚ and then I weighed all of the iron I obtained from the mixture in a container I already knew the weight of and calculated the net weight of the iron. Next
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Lab 2: Animal and Plant Cells Purpose: To examine the differences between single cell and multi cell organisms in terms of Animal and Plant cells. Question: What are the differences between multi and single celled plant and animal organisms? Prediction: Spirogyra Cell: The parts of the spirogyra cell that will be visible under the microscope will be; cell wall‚ cell membrane‚ nucleus‚ chloroplasts‚ vacuole and cytoplasm. Banana Cell: The parts of the banana cell that will be visible
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Tiffany Goh Biology SAC 3 “The Transport systems play an essential role in the survival of flowering plants and mammals” It is imperative that the organism’s cells have an ideal supply of the necessary materials to ensure its survival. At the same time‚ waste material must be removed to make room for the new material coming in and to avoid infection. Necessary substances and waste material merely move in and out of unicellular organisms by diffusion‚ osmosis or active transport due to direct contact
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2085C: Anatomy and Physiology Lab 4: Histology Name ___ Directions: There are five (5) activities in this lab. Please be sure to complete them all. For all questions‚ type your answers into the yellow box ____ (including your name above) it will expand as you write. Activity 1: Tissue Types 1-1: List the four types of tissue found in the human body and give an example of each. 1. _Epithelial__example: Skin_ 2. Connective_ example: Tendons___ 3. _Muscle__example: Muscles of
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3.01 Cell Cycle Lab Report Safety Notes: * Always handle microscopes and glass slides carefully. * Wash your hands after handling the prepared specimens. Materials: * Compound light microscope * Glass microscope slide with prepared onion root tip specimen Purpose: * understand and identify the stages of the cell cycle and mitosis. * apply an analytical technique to estimate the relative length of each stage of the cell cycle. Hypothesis Procedure: I predict that
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Erica Osorio 5057497 Christian Roque and Rogerlio The Mechanisms by which E.Coli Cells Developed Immunities toward Ampicillin due to Plasmid and DNA Consumption U34 Abstract During the ampicillin experiment the ability to transform cells to make them adaptable to their environment was studied. The E.coli bacterial cell was used in order to observe how its DNA was able to change and develop immunity towards ampicillin. In order for this change to occur the use of several
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Effects of Tonicity on Cell Membrane Abstract The purpose of this experiment was to determine the effects of tonicity on a cell membrane using red blood cells‚ potato strips and three unknown solutions (A‚ B‚ C). First three slides were prepared containing RBC’s and unknown solutions A‚ B and C. A control slide was prepared only using RBC’s. After observing each slide under the microscope it was determined that unknown solution A was hypertonic because the RBC appeared to have shrunk. The
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Observing Onion Cells Science 8 Observing Onion Cells ***Do not write anywhere on this piece of paper!!! It will be used again this afternoon!!!***** Instructions. On a piece of paper‚ write the title (see above)‚ the date‚ your block‚ and your name. Then copy out the problem (see below). Problem. What structures can you observe in an onion cell when using a compound light microscope? Hypothesis. On your lab report‚ below your Problem‚ write a Hypothesis that will
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Epidermis Cells Aim: To see if rhubarb changes when it is placed in solutions of different concentrations. Introduction: "Plasmolysis in Rhubarb Epidermis Cells" is an experiment to see whether or not rhubarb changed its cell structure when placed within different types or solutions. "A single layer of plant cell is placed on a micrscope slide and either distilled water or 5% NaCl solution is added to the cells. Osmosis will occur resulting in either turgid cells or plasmolysed cells." (www
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