2.3.3 Effects of heavy metals on plants Plants are sensitive for both‚ deficient and excess availability of some of the heavy metal ions. In which some of them at low concentration are compulsory micronutrients‚ while the same at higher concentrations such as Cd‚ Hg‚ As are intensely toxic to the metabolic activities of the plants (Reeves and Baker‚ 2000; Fernandes and Henriques‚ 1991). Agricultural soil is contaminated by heavy metals‚ has become a critical environmental concern due to their potential
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short-term‚ and long-term memory. • What is the role of glycolysis? Include the reactants and the products. Where does it occur? They are used to raise the energy content of the reactants in the first and third steps of glycolysis (glucose-6-phosphate and fructose-1‚6-diphosphate). Chemical reactions proceed more "easily" when they go from a high-energy state to a lower-energy state. Another way of saying it that they become "more reactive‚" since the ATPs are supplying the activation energy
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Name: _Leroy Johnson __________________________________ Date: ______________Comprehensive Study Guide. Test will only be Multiple choice 1. The feature that most clearly separates eukaryotes from prokaryotes is the presence of _______ in eukaryotic cells. A) ribosomes B) oxidative phosphorylation C) DNA molecules -D) a nucleus 2. Cytoplasmic organelles are - A) absent in prokaryotic cells; present in eukaryotic cells. B) present in both prokaryotic and eukaryotic cells
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Syllabus for GPAT - 2013 PHARMACEUTICS Introduction to Physical pharmacy Matter‚ Properties of Matter: State of matter‚ change in the state of matter‚ latent heats and vapor pressure‚ sublimationcritical point‚ Eutectic mixtures‚ gases‚ aerosols-inhalers‚ relative humidity‚ liquid. Complexes‚ liquid crystals‚ glassy state‚ solids- crystalline‚ amorphous and polymorphism. Micromeretics and Powder Rheology: Particle size and distribution‚ average particle size‚ number and weight distribution‚ particle
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cycle and the Electron Transport Chain and chemiosmosis. Recall that at the end of glycolysis there is a net production of two molecules of ATP and two molecules of NADH. The ATP is produced via substrate-level phosphorylation; in this reaction‚ a phosphate group on an organic molecule is transferred directly (along with high-energy electrons) onto a molecule of ADP. Substrate-level phosphorylation also occurs once during the Krebs cycle.For those organisms that completely oxidize glucose‚ the end product
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How has Human Activity impacted positively or negatively on species diversity? NAME OF CANDIDATE: CENTRE NUMBER: NAME OF SCHOOL: TOPIC: Species Diversity TEACHER: DATE SUBMITTED: Environmental Science Internal Assessment 2012 Caribbean Advanced Profiency Examination Table of Contents Pages * MAP : Study area in Relation to Trinidad 3 * Site Visits 4 * Laboratory
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Bio 115 Exam 1 Study Guide These topics will be on the exam. ▪ What are the tenets of cell theory? • Cells are the basic structural and physiological units of all living organisms. • Cells are both distinct entities and building blocks of more complex organisms. OR • All living organisms are composed of one or more cells‚ Cells are the basic units of structure and function in an organism‚ and Cells come only from the reproduction of existing
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BIO - PROJECT PLANT TISSUES Two Major Categories of Plant Tissues 1. Meristematic Tissue. A. Apical Meristems B. Lateral Meristems 2. Permanent Tissue A. Dermal (Surface Tissue) B. Fundamental Tissue (Ground Tissue) C. Vascular Tissue MERISTEMATIC TISSUE Composed of immature cells and are regions of active cell division. small‚ thin walls and rich in cytoplasm. Found in the growing tips of the roots and stem. A. Apical Meristems * Responsible for increase in length of
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Question Give an account of how enzymes work with particular reference to factors that affect their activities. Answer All living things require catalysts to catalyse the reaction which they carry out to survive. Enzymes are the catalysts of biological systems without enzymes reactions in cells would occur all much to slow a rate and the organism would not survive. Most enzymes‚ with the exception of some RNA catalysts‚ are proteins. They often require a co factor such as zinc or iron‚ or a complete organic
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SOIL POLLUTION INTRODUCTION Soil is the thin layer of organic and inorganic materials that covers the Earth’s rocky surface. The organic portion‚ which is derived from the decayed remains of plants and animals‚ is concentrated in the dark uppermost topsoil. The inorganic portion made up of rock fragments‚ was formed over thousands of years by physical and chemical weathering of bedrock. Productive soils are necessary for agriculture to supply the world with sufficient
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