foreign bodies. Epithelial cells protect the surface of our bodies as part of the skin. Cells in the immune system fight bacteria. Each cell plays an important role in the growth and development of our bodies. Despite the difference in all living organisms‚ no matter how diverse‚
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9.2 Maintaining A Balance 1. Most organisms are active in a limited temperature range. | | * Identify the role of enzymes in metabolism‚ describe their chemical composition and use a simple model to describe their specificity on subrates. | * Role of enzymes in the metabolism:Biological catalysts that control all chemical reactions within the body. They are specific to one action. | | * Chemical composition:Catalysts produced by cells made up of proteins (linked amino acids)
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Individual plants and animals could not exist by its self on earth. All organisms need other organisms for survival. An ecosystem is a community of living organisms. An ecosystem maintains an important balance in order for all organisms within the ecosystem to survive. The balance involves carbon‚ food‚ nitrogen‚ oxygen and water. The sun supplies the energy needed by ecosystems. Plants absorb the energy and use photosynthesis to convert it to sugar. There are nutrients in the air‚ soil and water
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biological unit of all known living organisms. Cells are the smallest unit of life that is classified as a living thing‚ and are often called the "building blocks of life". Discoverer: The cell was discovered by Robert Hooke in 1665. The cell theory‚ first developed in 1839 by Matthias Jakob Schleiden andTheodor Schwann‚ states that all organisms are composed of one or more cells‚ that all cells come from preexisting cells‚ that vital functions of an organism occur within cells‚ and that all cells
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trophic level. True c Energy moves through an ecosystem as the chemical energy of organic matter. True d Producers can capture and transform radiant energy. True e Energy is recycled within an ecosystem. False 2 Give an example of an organism that is: a a producer in a terrestrial ecosystem Typical producers in a terrestrial ecosystem would be expected to include flowering plants‚ conifers‚ ferns and mosses. b a producer in an aquatic ecosystem In an aquatic ecosystem‚ producers
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Homeostasis is the ability of a cell or organism to maintain a stable internal environment despite fluctuating external environmental conditions. An animal will maintain this state of equilibrium through adjustment mechanisms that keep the conditions of its cells and body within a narrow range (SOC 2 n.d.). Homeostasis is crucial to the survival of an organism‚ by maintaining a stable environment‚ it enables cells to be functioning optimally‚ giving an organism the best chance of surviving to a reproductive
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DNA is the “blueprint” for the individuality of an organism. The organism relies upon the information stored in its DNA for the management of every biochemical process. The life‚ growth and unique features of the organism depend on its “blueprint”. The parts of DNA which have been linked with specific features or functions of an organism are called genes. Molecular biologists have discovered many enzymes which change this structure in living organisms. Some of these enzymes can cut and join strands
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`Biology B1 Revision Classification • Organisms were based into groups based on their characteristics (classification). • Kingdom‚ Phylum‚ Class‚ Order‚ Family‚ Genus‚ Species Kingdom Main Characteristics Animalia Multicellular; heterotrophic feeders so no chlorophyll‚ no cell walls; complex cell structure with nucleus Plantae Multicellular; autotrophic feeders using chlorophyll; cell walls made of cellulose; complex cell structure with nucleus Fungi Multicellular; cell walls not made
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fields like biomedical sciences‚ magnetics‚ optoelectronics‚ nanochips production‚etc. Nanoparticles are been commonly used in various drug therapies.Uptil now‚ pioneers from this field have atttained success of synthesising nanoparticles from micro-organisms like fungi‚ bacteria‚ yeast‚ etc. Nanowires and nanotubes can be prepared by extraction of this nanoparticles from their source. This study is concerned with extraction of intracellularly produced silver nanoparticles from the fungus Verticillium
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and the application to real life situations. Concept of Habituation The concept of habituation begins with the understanding of the orienting response or orienting reaction. The orienting response or investigatory reflex is the reaction an organism has to any stimulus for the purpose of identifying the source of it and
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