do not have a cell wall. 5. Refer to the image of Elodea leaf cells below. Describe two OBSERVABLE features that confirm it is a plant cell. The thick layer around each cell is the cell wall‚ a rigid layer outside the cell membrane that gives the cell structure and support. Its present indicates that the cell is either a prokaryote or plant cell. The small green organelles within each cell are chloroplasts. Chloroplasts facilitate photosynthesis and are only found in plant cells; thus their presence
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Name: ____Justine Basilone___ Osmotic Regulation Virtual Laboratory Biology Go to the following virtual laboratory: http://www.glencoe.com/sites/common_assets/science/virtual_labs/LS03/LS03.html Answer your questions in this word document‚ save the file and submit through Edmodo. Your answers should be at least 2 complete sentences if not more! Part I: Observations & Data: Read the Introductory information and the Procedure located in the window to the left of the screen and
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The Effects of Harmful Algal Blooms and Eutrophication Introduction Eutrophication‚ by definition‚ is a process where bodies of water receive excess nutrients that stimulate excessive plant growth. Eutrophication results from continuous pollution in the form of agricultural run-offs or sewage outflows. Fertilizers and sewage are both rich in nitrogen and phosphorus‚ which are both nutrients essential for plant growth. However‚ these nutrients are typically low in content in aquatic environments
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PLANT CELL Introduction Plant cell is the basic unit of structure and function in nearly all plants. The range of specialization and the character of association of plant cells are very wide. In the simplest plant forms a single cell constitutes a whole organism and carries out all the life functions. In just slightly more complex forms‚ cells are associated structurally‚ but each cell appears to carry out the fundamental life functions‚ although certain ones may be specialized
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SPECIES‚COMMUNITY AND ECOSYSTEM SP | SPECIES1.Every different living thing is called a species2.Examples:a) A sparrow is a species of bird.b)A pigeon is another species of bird.3.Individuals from the same species have the same appearance and characteristics.4.Individuals from the same species are able to reproduce among themselves. | | POPULATION1.A group of the same species living together in the same habitat forms a population. 2.EXAMPLES:a)A group of sparrows living together forms a
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selectively permeable‚ diffusion‚ osmosis‚ concentration gradient‚ equilibrium‚ turgid‚ plasmolyzed‚ plasmolysis‚ turgor pressure‚ tonicity‚ hypertonic‚ isotonic‚ hypotonic; 2. Describe the effects of hypertonic‚ isotonic‚ and hypotonic solutions on Elodea leaf cells and onion scale leafs. Introduction: Membrane permeability is a quality of a cell’s plasma membrane that allows substances to pass in and out of the cell‚ so that the cell can expel waste products and ship out the chemicals it assembles
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Centre Number For Examiner’s Use Candidate Number Surname Other Names Examiner’s Initials Candidate Signature Question General Certificate of Secondary Education Higher Tier June 2012 Additional Science BL2HP H Unit Biology B2 Biology Unit Biology B2 Monday 21 May 2012 Mark 1 2 3 4 5 6 7 TOTAL 9.00 am to 10.00 am For this paper you must have: a ruler. You may use a calculator. Time allowed 1 hour Instructions Use black ink or
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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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BioLab3 Cell Membranes Lab Report Student Name: I. Diffusion Define the following terms. Solvent Solute Solution. Diffusion Concentration gradient Dynamic equilibrium EXERCISE 1 – Factors influencing rate of diffusion Predict how molecule size and temperature will affect the outcome of this experiment. Record the data from the information in the lab. Potassium Permanganate R.T. Methylene Blue R.T. Time (min) Total Diameter
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Brownian movement by observing carmine on a wet mount slide‚ and by using dialysis tubing‚ we investigate the selective permeability to reducing sugar‚ glucose‚ starch‚ and iodine potassium iodine. In experiment 5.2 we use samples of ox blood and Elodea plant to observe the net flow of water from the surrounding solution into the cells. In experiment 5.3 in order to estimate the osmolarity of the potato tuber cells we use the methods of change in weight and change in volume. In experiment 5.1 while
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