PATTERNS IN NATURE – Summary Notes 1. ORGANISMS ARE MADE OF CELLS THAT HAVE SIMILAR STRUCTURAL CHARACTERISTICS 1.1 Outline the historical development of the cell theory‚ in particular‚ the contributions of Robert Hooke and Robert Brown The Cell Theory states that: All living things are made of cells (Theodor Schwann & Matthias Schleiden) Cells are the basic structural and functional unit of organisms (Theodor Schwann) All cells come from pre-existing cells (Rudolf Virchow) The historical
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Copyright © 2013 Edmentum - All rights reserved. Adaptations 1. If you were to genetically engineer soybeans‚ which change would be most useful for farmers bothered by leafmunching bugs? A. physiological‚ faster plant growth B. physiological‚ addition of a bitter taste to the plant ’s leaves C. structural‚ increased leaf cuticle thickness D. structural‚ change in leaf color 2. An animal that lives in a desert biome will most likely have adaptations that help the animal to A. insulate its body. B
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Rule – role of S/V • Gloger’s Rule – pigmentation in hot‚ humid climates Ecosystem Processes • Water Cycle • Water and plants • Photosynthesis • movement based on Ψ (Greek symbol‚ psi‚ water potential) • transpiration-cohesion hypothesis • Pollution and water-use efficiency • Animal adaptations to drought and excess water conditions • Freshwater vs. marine osmotic balance adaptations • Mammalian nephron structure and function • Effects
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of stomata of a leaf.” Research Question: How do differing leaf heights affect the number/density of stomata of a leaf? Hypothesis Stomata are pores‚ typically found under the leaf (lower epidermis)‚ that control the gas exchange of transpiration‚ where water vapor leaves the plants‚ and carbon dioxide enters. I predict that the stomatal density on high leafs is higher than on low leafs. During photosynthesis the chloroplasts in the leaf cells synthesize ATP from ADP as a result of exposure
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ANSWERS Cambridge IGCSE® Biology Practice Book Answers 1 Characteristics of living things 1 Characteristic respiration an increase in size‚ mass and complexity of an organism excretion producing offspring‚ which prevents extinction of the species sensitivity this involves feeding – obtaining nutrients for growth‚ energy and maintaining health reproduction in response to changes‚ e.g. presence of a predator‚ to find food or a mate growth the ability
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water‚ which in turn would help with the growing of crops. When water is available a source of food should be constant. Water is a necessity when it comes to growing crops or any plants. Plants use most of the water they get form the soil for transpiration‚ but a portion of the water taken in is used during photosynthesis for producing the sugar and glucose necessary for plant to grow. A prime example of this would be in Sumer where the people would use a process know as irrigation to water their
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An example of a specialised animal cell could be of a nerve cell. The nerve cell contains axons of motor and sensory neurons‚ which are in bundles of fascicles. They are surrounded by connective tissue which is the sheath of perineurium which ensures that the cells do not get damaged. This lso helps do that the function of the cell is carried out correctly (Nerve Anatomy or Structure (Expanded View)‚ 2017). The function of a nerve cell is to emit impulses through electrical signals fromt the brain
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are represented in this model and by what components? Answer = Evaporation‚ condensation‚ sublimation‚ and precipitation. 2. Which processes are not represented? How could the model be altered to include these processes? Answer = Transpiration‚ surface run-off‚ infiltration‚ and percolation. With or by adding sand and possibly plants to the assignment would increase our awareness of the other processes. 3. How would the “weather” be affected if the water was at a decreased temperature
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Elements of weather and climate[edit] There are several elements that make up the weather and climate of a place. The major of these elements are five: temperature‚ pressure‚ wind‚ humidity and rain. Analysis of these elements can provide the basis for forecasting weather. These same elements make also the basis of climatology study‚ of course‚ within a different time scale rather than it does in meteorology. Modifying factors of weather and climate[edit] The more important are also five: latitude
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The Rainforest Ecosystem ENV 100 April 15 2013 The Rainforest Ecosystem “In an average year in a tropical rain forest‚ the climate is very humid because of all the rainfall‚ which amounts to about 250 cm per year” ("Discover The Rainforest "‚ 2011). The rain forest has large amounts of rain because it is very hot and wet. Tropical rainforests are defined by rainfall. They would not survive without it. Not all rain forests have tropical sunny
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