CELL DIVISION Important Formula #1 In case of animal cells‚ cytokinesis takes place through cell furrow (centripetal). Cytokinesis takes place in plants by the formation of cell plate (centrifugal). Important Formula #2 Meiosis causes reduction chromosome number‚ so it is also known as reduction division. CELL RESPIRATION Important Formula #1 For oxidative phosphorylation‚ 2.5 ATP are produced per NADH and 1.5ATP per FADH2. (Approx.) Important Formula #2 Non-germinating live seeds and
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Lab 1: Environment in the Media Danger Caused by Wind Turbines on Winged Animals Name: Aiya Abdulrazak TA: Rhodri Taylor Due: Jan 26 2012 S/N: 211495074 Course: BIOL 1001 Section: M.05 Danger Caused by Wind Turbines on Winged Animals Wind turbines have been used for many years now. Wind turbines are affordable‚ charges batteries‚ and were the first kind of renewable energy. To humans‚ this was a great invention‚ but for birds
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concentration gradient until each side of the membrane are equal. The water moves because the membrane is impermeable to the solute and the solute concentrations may differ on either side of the membrane. Water molecules may move in and out of the cell‚ but there is no net diffusion of water. Water will move in one direction or the other‚ and this is determined by the solute or solvents concentration levels. If the two solutions are of equal concentrations‚ they will be isotonic. If the concentrations
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Biology‚ the Study of Life C H AP T E R O U T LI N E Science Helps Us Understand the Natural World 1.1 Scientists use a preferred method 4 1.2 Control groups allow scientists to compare experimental results 6 THE CELL THEORY: 1 Fire Ants Have a Good Defense ire ants have a red to reddish-brown color‚ but even so‚ they most likely take their name from the ability to STING. Their stinger protrudes from the rear‚ but in a split second‚ they can grab a person’s skin with their mandibles and
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3A The Structure of Cells Monday‚ September 30‚ 2013 • Cytology ○ Cyto = cell ○ Logos = study of • Background ○ 1665 Robert Hook’s Micrographia § Was studying cork cells ○ 1833 R. Brown § Discovered nucleus ○ 1838 M. Schleiden § Said that all plants consist of cells ○ 1839 T. Schwann § All animals consist of cells ○ 1855 Virchow § Cells come only from preexisting cells • The Cell Theory ○ Cells are the structural units of all living things
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Adaptation Definition: Adaptation is the process of how organisms develop special structures and internal processes to enable them to live in their environment. Definition: Adaptation is the process of how organisms develop special structures and internal processes to enable them to live in their environment. Organisms can be adapted in two ways: 1. Body structure (e.g. Small ears to reduce heat loss) 2. Body processes (e.g. Osmoregulation in salmon) There are several factors which
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10 percent of those diagnosed with Schizophrenia commit suicide‚ usually because they want to get rid of the “voices”‚ and this can be stopped with medications as they alleviate the symptoms of Schizophrenia to such a degree that it’s possible to function and deal with symptoms‚ such as voice or delusions. In general‚ if you do not know about your illness you can never get therapy to be able to cope with this which can lead to dire consequences. Mira: I actually have heard of some of the causes
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piecemeal degradation‚ such as habitat fragmentation. Nearly every human activity can alter or destroy habitat. Farming replaces diverse natural communities with simplified ones of only a few plants species (certain crops). Grazing modifies the structure and species composition of grasslands. Either type of agriculture can lead to desertification. Clearing forests removes the food‚ shelter‚ and other resources that forest dwelling organisms need to survive. Farming‚ logging‚ and road building‚ and
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Biology IB Standard Level 2012-2014 Index Topic 1 Topic 2 Topic 3 Topic 4 Topic 5 Topic 6 Topic 7 Topic 8 Topic 9 Topic 10 Topic 11 Statistical analysis Cells The chemistry of life Genetics Ecology and evolution Human health and physiology Nucleic acids and proteins Cell respiration and photosynthesis Plant science Genetics Human health and physiology Topic
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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 January 2014 Mark 1 2 3 Additional Science M (modular) MBL2HP 4 Unit Biology B2 5 H Biology M (modular) Unit Biology B2 Wednesday 8 January 2014 9.00 am to 10.00 am 6 7 TOTAL For this paper you must have: a ruler. You may use a calculator. B Time allowed 1 hour Instructions Use black ink or black ball-point
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