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Lecture 15

BIOL 1012 Lecture Notes - Lecture 15: Ibuprofen, Chemical Warfare, Enzyme Inhibitor


Department
Biology
Course Code
BIOL 1012
Professor
Suman Batish
Lecture
15

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Bio 2/22
ATP drives cellular work by coupling exergonic and endergonic reactions
o ATP powers nearly all forms of cellular work
o Consists of
Adenosine
A triphosphate tail of 3 phosphate groups
o Hydrolysis of ATP releases energy by transferring its third
phosphate to another molecule, called phosphorylation
o Most cellular work depends on ATP energizing molecules by
phosphorylating them.
o 3 Main Types of Cellular Work
Chemical
Mechanical
Transport
o ATP drives all three types of work
o A cell uses and regenerates ATP continuously
o Energy released in an exergonic reaction is used in an
endergonic reaction to convert ADP to ATP
Ezyes speed up the ell’s heial reatios y lowerig eergy
barriers
o Biological molecules possess much potential energy, but it is not
released spontaneously
Energy barrier must be overcome
This energy is called activation energy
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