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ATP. powers cellular work by coupling exergonic reactions to endergonic reactions. a cell does 3 kinds of work: chemical, transport, mechanical. To do work, cells manage energy resources. by energy coupling. ATP is composed of. ribose, adenine, and three phosphate groups. Hydrolysis.
couple reaction that consists of TWO reactions. Requires 27 kJ + hydrolysis of ATP releases 30 kJ so it works out. first reaction: glucose is phosphorylated + becomes the shared intermediate. this is energy releasing because ATP is that unstable w/ its 3 phosphates. second reaction: glucose-P reacts w/ fructose - > sucrose. this releases energy ...
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22 cze 2021 · How do cells generate ATP? Key Points; Cells couple the exergonic reaction of ATP hydrolysis with endergonic reactions to harness the energy within the bonds of ATP.
In the first reaction, a phosphate group is transferred from ATP to glucose, forming a phosphorylated glucose intermediate (glucose-P). This is an energetically favorable (energy-releasing) reaction because ATP is so unstable, i.e., really "wants" to lose its phosphate group.
Cells use ATP to perform work by coupling the exergonic reaction of ATP hydrolysis with endergonic reactions. ATP donates its phosphate group to another molecule via a process known as phosphorylation.
Cells couple the exergonic reaction of ATP hydrolysis with the endergonic reactions of cellular processes. For example, transmembrane ion pumps in nerve cells use the energy from ATP to pump ions across the cell membrane and generate an action potential.
