Biology Notes: Threats to biodiversity in MA 1. Climate change: temp‚ sea levels‚ precipitation 2. Non climate threats such as habitat loss‚ habitat fragmentation‚ and invasive species and air and water pollution Fragmentation: often due to man (dams‚ roads‚ and general development) Elements of biodiversity: Species‚ ecosystems & landscapes Mammals from bats to bears Bats got the white nose fungus which caused the bats to die and the insect population flourished because the bats main job
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Department of Biology and Microbiology North South University Date of Submission: 20th August‚ 2013 Sl | Topic | Page | 1 | Introduction | 2 | 2 | Description | | | 2.1 Impact on Air | 3 | | 2.2 Impact on Water | 3 | | 2.3 Impact on Soil Pollution | 5 | | 2.4 Green House Effect | 5 | | 2.5 Increase Disease | 7 | | 2.6 Effect on Flora and Fauna | 7 | | 2.7 Impact on Ecosystem | 8 | | 2.8 Extinction | 8 | 3 | Conclusion | 8 | Table of Contents Introduction Industrialization
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References: Edlin‚ G. Golanty‚ E. and McCormack‚ B. (1999). Essential for Health and Wellness‚ Toronto: Jone and Bartlett Publishers. Pp280 McMillan‚ B and Starr‚ C. (2013). Human Biology‚ Belmont: Brooks/Cole‚ Cengage Learning Pp 179 Starr‚ C.‚ Ever‚ C. and Starr‚ L. (2009). Biology Today and Tomorrow with Physiology‚ Belmont: Brooks/Cole‚ Cengage Learning pp 432
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investigation was to study the effects of temperature and a low pH solution on beetroot cells. Introduction (200) The general belief amongst our group members was: an increase in temperature will damage the permeability of the plasma membrane. Also‚ the heat will break away the permeability. If the pH solution is 7 or greater there will be no change but the lower the pH the more proteins in the membrane deteriorate. This was believed because its very common that with heat applied to something‚ the
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ratio will experience the greatest weight change‚ because more water can move by osmosis across the potato cell’s semi permeable membrane. 2) If potato pieces are immersed in various salt solutions‚ then the pieces immersed in the most concentrated solution will experience he greatest weight change‚ because more water must pass across the potato cells semi permeable membrane by osmosis to achieve an equilibrium. The results from testing these hypotheses did not support either and were shown to be flawed
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substances. 5. Macroconsumer or phagotrophs (Phago-To eat) Heterotrophic organisms chiefly animals‚ Which ingest other organisms or particulate organic matter. 6. Microconsumer‚ Saprotrophs (Sapho-Decompose) or osmotrophs (Osmo-to pass through membrane) heterotrophic organisms chiefly bacteria and fungi which breakdown the complex compound of dead protoplasm‚ absorbs some of the decomposition products‚ and release inorganic nutrients that are usable by the producers together with inorganic substances
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Biology Exam Review Unit One – Biochemistry What is an isotope? Isotope - An isotope is all atoms of the same element that have the same number of protons‚ but they may have different numbers of neutrons in the nucleus. - This means that all atoms with the same atomic number can have different atomic masses. - Because they have the same number of protons and electrons‚ they behave exactly the same in chemical reactions. Radioisotope - The nuclei of some isotopes of an element are unstable
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so the chromosomes must be decondesed to appear in the form of chromatin and that too in form of euchromatin if DNA remained organized in the sense that they would not be accessible for transcription. Before the chromosomes condense the nuclear membrane goes through meiosis which is cell division between and egg and sperm cell that determines the sex of a baby. The sex is found by the sperm which carries a X and Y sex chromosomes. Before the cell divides two sets of chromosomes pair together and
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The plasma membrane is a fluid phospholipid bilayer. The outside of the bilayer is hydrophilic portions of porteins and phospholipids because they are exposed to water. This results in a stable membrane structure. Inside the bilayer hydrophobic portions of proteins and phospholipids because the inside of the bilayer is nonaqueous. the proteins bob in the fluid bilayer of phospholipids. The proteins also vary in structure and function. There are teh integral proteins; transmembrane
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Lauren Spillers Biology 1408 February 5‚ 2013 Lung Cancer Lung cancer is the number one form of deadly cancer in the United States. It is not only something that can kill you but also can put a strain on you and your family financially‚ emotionally‚ and medically. Lung cancer is formed when the cells of the lungs grow in an uncontrolled way‚ this creates a lump or a tumor which can either be malignant (cancerous) or benign (not cancerous). Radon gases‚ smoking‚ and second hand smoke cause lung
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