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The pathway uses a different enzyme for each direction for the irreversible step in the pathway, allowing independent regulation of catabolism and anabolism. Due their inherent duality, amphibolic pathways represent the regulation modes of both anabolic by its negative feedback end product and catabolic by feedback by energy indicator sequences.
An example of a coupled reaction is the phosphorylation of fructose-6-phosphate to form the intermediate fructose-1,6-bisphosphate by the enzyme phosphofructokinase accompanied by the hydrolysis of ATP in the pathway of glycolysis. The resulting chemical reaction within the metabolic pathway is highly thermodynamically favorable and, as a ...
An irreversible process increases the total entropy of the system and its surroundings. The second law of thermodynamics can be used to determine whether a hypothetical process is reversible or not. Intuitively, a process is reversible if there is no dissipation. For example, Joule expansion is irreversible because initially the system is not ...
A sharp, clear, vivid, dramatic, or exciting learning experience teaches more than a routine or boring experience. The principle of intensity implies that a student will learn more from the real thing than from a substitute. Examples, analogies, and personal experiences also make learning come to life.
Learning theory describes how students receive, process, and retain knowledge during learning. Cognitive, emotional, and environmental influences, as well as prior experience, all play a part in how understanding, or a worldview, is acquired or changed and knowledge and skills retained.
An instructional theory is "a theory that offers explicit guidance on how to better help people learn and develop." [ 1 ] It provides insights about what is likely to happen and why with respect to different kinds of teaching and learning activities while helping indicate approaches for their evaluation. [ 2 ]
Bringing home a new baby is always a special time, and bringing one home during the holidays makes it even more special. Chase and Chester and Golden Retrievers that recently got a new baby sister ...
Learning theory (education), the process of how humans learn Connectivism; Educational philosophies, an academic field that examines the definitions, goals and meaning of education, or of specific educational philosophies. Behaviorism (philosophy of education) Cognitivism (philosophy of education) Constructivism (philosophy of education)