Biology Revision Notes Biochemical Tests: Proteins - add biurettes reagent to the sample. If protein is present‚ clear colour change from blue to purple. Reducing Sugars – add Benedict’s reagent to the sample. Heat in Bunsen or water bath. If reducing sugars are present‚ clear colour changes from blue -> orange red precipitate. Lipids – dissolve sample in ethanol. Slowly pour the solution into the water slowly. If lipids are present a white emulation forms on the surface. Starch – add iodine
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properties of the hormonal signal‚ exogenous strigolactone can be transported in shoots and act at low concentrations. We suggest that endogenous strigolactones or related compounds inhibit shoot branching in plants. Furthermore‚ ccd8 mutants demonstrate the diverse effects of strigolactones in shoot branching‚ mycorrhizal symbiosis and parasitic weed interaction. More than a decade ago‚ increased branching mutants in garden pea (Pisum sativum L.) and petunia (Petunia hybrida)‚ rms1 and dad1
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Biology - Main Questions And Answers: Complete the table with a tick if the statement in the first column is true‚ for each process. Write a simple equation to show how ATP is synthesised from ADP: ADP + Pi ATP Give two ways in which the properties of ATP make it a suitable source of energy in biological processes: 1. Energy released in small/suitable amounts 2. Soluble 3. Involves a single/simple reaction Humans synthesise more than their body mass of ATP each day.
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Section 1 : Identifying the Genetic Material Griffith’s Experiments In 1928‚ Frederick Griffith‚ a bacteriologist‚ was trying to prepare a vaccine against pneumonia. A vaccine is a substance that is prepared from killed or weakened disease-causing agents‚ including certain bacteria. The vaccine is introduced into the body to protect the body against future infections by the disease-causing agent. Griffith discovered that harmless bacteria could turn virulent when mixed with bacteria that cause
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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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organisms consuming other livng oganisms and saprophages organisms feeding on dead organic matter. From the functional standpoint‚ An ecosystem may be conveniently analyzed in terms of the following. 1. Energy circuits 2. Food chains 3. Diversity patterns in time and space 4. Nutrients (Biogeochemical) cycles 5. Development and evolutions‚ and 6. Control (cybernetics) The organisms (Biotic) | Examples | Producers | Grass‚ palay‚ phytoplankton. | Consumers | | Herbivores
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Biology Project Autumn Brown 3rd block Mrs. Stephens More than 2‚000 years ago‚ Aristotle began grouping plants and animals into various categories. Although he did not consider the idea that different organisms were related by descent‚ he devised a system that placed these organisms in a hierarchy. Through classification systems‚ scientist have found it easier to find answers to important questions. This way
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paradigm for managing diversity‚ written by David A. Thomas and Robin J. Ely‚ demonstrates the various types of diversity management‚ the ways in which they work‚ and how they can possibly have an adverse affect on companies. As stated in this article: Our goal is to help business leaders see what their own approach to diversity currently is and how it may already have influenced their companies’ diversity efforts. Managers can learn to asses whether they need to change their diversity initiatives and
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Business Management | What is diversity? | Sholunda Cruz Business Management 5/20/2011 Diversity is becoming an increasingly important factor in not only organizational life but organizations world-wide as well. As organizations are taking that leap into globalization there becomes a need to know about different cultures and how they function. Globalization has become a prominent factor in many companies. In order for companies to be able to compete they need to have a multicultural variety
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Diversity can be defined as people coming together from different races‚ nationalities‚ religions and sexes to form a group‚ organization or community. A diverse organization is one that values the difference in people. It is one that recognizes that people with different backgrounds‚ skills‚ attitudes and experiences bring fresh ideas and perceptions. Diverse organizations encourage and harness these differences to make their services relevant and approachable. Diverse organizations draw upon the
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