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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.
- ap bio chp 9 Flashcards
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- ap bio chp 9 Flashcards
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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This example shows how reaction coupling involving ATP can work through phosphorylation, breaking a reaction down into two energetically favored steps connected by a phosphorylated (phosphate-bearing) intermediate.
2 paź 2024 · Study with Quizlet and memorize flashcards containing terms like identify some specific processes the cell does with ATP, Explain why ATP is such a high energy molecule, How does ATP couple reactions? and more.
In most cases, cells use a strategy called reaction coupling, in which an energetically favorable reaction (like ATP hydrolysis) is directly linked with an energetically unfavorable (endergonic) reaction.
Cells couple the exergonic reaction of ATP hydrolysis with endergonic reactions, allowing them to proceed. One example of energy coupling using ATP involves a transmembrane ion pump that is extremely important for cellular function.
