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Fischer 's template or lock and key model
According to this model, the catalytic site of the enzyme has a proper conformation compatible to a specific substrate even in the absence of the substrate molecule. The catalytic site binds the substrate and catalyzes the reaction without any change in its own three dimensional conformation. It has become possible to explain the specificity of many enzymes for only one of the stereoisomers of the substrate by this model.
Heterochromatin: Compact, gene-poor areas of a genome, which are enriched in the simple sequence repeats. As it may be impossible to clone, heterochromatin is generally ignored wh
Chemotaxis - Modes of Cell Movement Chemotaxis considers to me directed movement of cells in response to a concentration gradient of a chemical factor in solution. An instance
What are sensory receptors? Sensory receptors are structures specialized in the acquiring of information, such as temperature, mechanical pressure, pH, chemical environment and
what is tolerance range ? define and explain it ?
Components of a Balanced Diet Food which we eat, has effect on the growth and development, and the maintenance of normal body functions. Hence, a good balanced diet is needed t
Q. How is the transport of substances done across the bryophyte tissues? How is this feature related to the general size of these plants? In bryophytes there are no nutrient-co
a precaution to follow when heat fixing a smear
What is the role of Stomach in human body? The stomach serves both to digest food and to hold it so that it can be gradually released into the small intestine. Food stays in th
Growth-form and Structure In a community the number of species and size of their populations vary greatly. A community may have one or several species. The environmental factor
Define Antioxidant Activity of manganese? As Mn is a component of mitochondrial Superoxide Dismutase (SOD), it can protect against oxidative damage. In-vitro experiments have i
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