Texture of Soil

Texture of Soil To study the mineral particles of a soil, scientists separate them into groups according to their size. These groups are called soil separates or fractions. The relative proportions of different sized Soil separates are called soil texture. Soil Separates A number of different classifications have been proposed to determine the particle size distribution. The classification established by ...

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Weathering

Weathering The process in which massive consolidated rocks are broken down into fine, smaller particles is termed weathering. It is combination of destruction and synthesis processes. The rocks are first broken into smaller rocks and then into minerals which they are composed (primary minerals) such as feldspars. The rock fragments and minerals are attacked by chemical forces which release soluble ...

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Soil Factor – Parent Material

Soil Factor – Parent Material The unconsolidated mass from the soils are formed is the parent material. It constitutes the basic mineral framework of most soils and consists of small fragments of inorganic matter which has been derived from solid rock by mechanical or chemical types of weathering, Depending on the mode of origin, most parent materials can be classified ...

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pedology

Soil Factor The word soil is derived from Latin solum meaning soil or land, Soil is the upper and biochemically weathered portion of the regolith. Or Soil is a collection of natural bodies of Earth that is composed of mineral organic matter and is capable of supporting plant growth. Or Soil is the weathered outer layer of Earth’s crust, which ...

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Ecology – Level of Organizations

Ecology – Level of Organizations Ecology can be considered on a wide scale, moving from an individual the entire global ecosystem. However, four identifiable sub-divisions of scale are of interest. These are: organisms (individuals), populations, communities and ecosystems. At each level the subject of interest to ecologist’s changes. Organism Organism refers to any living individual, either unicellular or multicellular. An ...

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Ecology

Ecology Ecology is the scientific study of the interactions between organisms and their environment. The environment includes both abiotic factors: such as temperature, light, water, wind, soil and nutrients; and biotic factors: the other living organisms. The interactions may be competition, predation, parasitism and cooperation. The work ecology was first used by a German Ernst Haeckel in 1869. It comes ...

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Enzyme Classification

Nomenclature and Classification of Enzymes Naming the Enzymes Enzymes are generally named according to the substrate they complex with or the type of reaction they catalyze. The usual practice is to add suffix -ase to the name of the substrate involved. Thus, the enzyme cellulase, arginase and tyrosinase are named because their substrate cellulose, arginase and tyrosinase. But as the ...

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Enzyme Inhibition

Enzyme inhibition types Competitive inhibitors bind reversible to the enzyme, preventing the binding of substrate. On the other hand, binding of the substrate prevent the binding of the inhibitor. Substrate and inhibitor compete for the enzyme. Competitive Inhibition In competitive inhibition, the inhibitor and the substrate compete for the enzyme (i.e., they cannot not bind at the same time). Often ...

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Mechanism of Enzyme Action

Mechanism of Enzyme Action The molecules upon which an enzyme acts are called its substrate. For example, cellulose is broken down by enzyme cellulase, therefore cellulase is the substrate. Active Sites The active site of enzymes is a complex three dimensional-cavity into which the substrate molecule fits. At the active sites the enzymes work by lowering the energy of activation. ...

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What Are Enzymes

Enzymes Enzyme are partly or entirely a protein that can tremendously increase the efficiency of a biochemical reaction and is generally specific for that reaction. The term enzyme (Gr. en = in + zyme = living) was first discovered by W. Kuhne in 1878 while working on fermentation. Nature of Enzymes – Physical Properties The enzymes are proteins wholly or partly. ...

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