CELL STRUCTURE CELL THEORY: Structural and functional unit of all living things New cells arise from already existing cells Cells contain information that instructs growth. This information can be passed onto new cells. MICROSCOPES: There are two main types of microscopes: Light and Electron Electron Micrographs- shown in colour LIGHT ELECTRON Uses beam of light Magnification = x1500 Resolution = 200 nm Wide range of specimens can be used Samples are fairly quick + easy to prepare
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short time‚ the final results showed that the more water the potatoes were placed in‚ the more hypotonic the potato becomes. Tonicity is stated to be the state of a solution in respect of osmotic pressure. Types of tonicity used in this lab are osmosis and diffusion. In a way these two solutions are somewhat similar but differ in the way that diffusion refers to the movement of any chemical from one place to another‚
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Cited: Arai M‚ Mori H‚ Imaseki H (1992) Cloning and sequence for an intracellular acid invertase from etiolated hypocotyls of mung Plant Cell Physiol33: 245-252 Chetelat RT‚ DeVerna JW‚ Bennett AB (1995) Effects of the Lycopersicon chmielewskii sucrose accumulator gene (sucr) on fruit yield and quality parameters following introgression into tomato. Theor Appl Genet 91: 334-339 Coombe BG (1992) Research on development and ripening of the grape berry. Am J Enol Vitic 43: 101-110 Coombe BG‚ Bishop
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Lab 6: Enzymes . header Purpose: The purpose of this lab is to test for enzyme activity‚ look at enzyme specificity‚ and how temperature affects enzyme activity. Time need to perform this lab: approximately 3 hours Preparation FIRST: Read the lab in its entirety TWICE before you begin. You will perform the experiment‚ write your lab report and include the answers to the additional 4 questions within the text for full credit on this experiment. Materials: •3% hydrogen peroxide •a
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in weight indicates that there has been no net gain or loss of water. This is a means of indirectly finding the osmolarity of the cells themselves. Apparatus 1 large potato Petri dish 7 x 250 ml beakers (disposable cups may be substituted) sucrose solutions: 0.1‚ 0.2‚ 0.3‚ 0.4‚ 0.5‚ 0.6 molar marker razor blade/scalpel forceps cork borer balance (2dp) distilled water paper towels ruler (30 cm) Method 1. Get 100 ml of each of the solutions including distilled water. Place
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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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Carbon‚ Hydrogen and Oxygen. These three simple elements make up one of the most useful substances for many living organisms: Carbohydrates. Carbohydrates are used for numerous processes in organisms from acting in important roles of cellular recognition in the human body to storing chemical energy in plants in the form or starch. The roles of carbohydrates in the human body alone are numerous; providing energy for working muscles‚ providing energy for the regulation of blood glucose‚ preventing
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[pic] Inorganic ions ➢ Inorganic ions are important for the structures and metabolism of all living organism ➢ An ion is an atom or a group of atom which has overall electric charge. ➢ Inorganic ion are water soluble |Ions |Roles/Functions | |Calcium (Ca2+) |Make teeth and bones | |
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related to each other at the same time. Such methods are crucial for seawater reverse osmosis for what they bring from cost and residence time reductions to the increase in the production quality. 6.1. Pretreatment Various pretreatment methods are used and they include: biofilter‚ subsurface intake systems‚ conventional treatment‚ biological activated carbon‚ and chlorine injection. 6.1.1. Biofilter In reverse osmosis‚ various problems might arise; however‚ the major problem that could be faced is
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Instructions You must SHOW WORK AND PROBLEM SET-UP for CREDIT. You have to SUPPORT your answers by calculations and/or reasoning. If you do not understand something in the assignment or are not sure how to approach a question - EMAIL me before you submit. This assignment must be submitted no later than November 22nd‚ 2011. 1. What is a true solution? Explain why the solute does not settle out of a solution. Is it possible to have one solid dissolved in another? Explain. In metals it would
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