))
Endergonic and Exergonic Reactions
Manage episode 293245770 series 2859788
Вміст надано Hopewell Valley Student Publications Network. Весь вміст подкастів, включаючи епізоди, графіку та описи подкастів, завантажується та надається безпосередньо компанією Hopewell Valley Student Publications Network або його партнером по платформі подкастів. Якщо ви вважаєте, що хтось використовує ваш захищений авторським правом твір без вашого дозволу, ви можете виконати процедуру, описану тут https://uk.player.fm/legal.
My AP Biology Thoughts
Unit 3 Cellular Energetics
Welcome to My AP Biology Thoughts podcast, my name is Nikki and I am your host for episode #67 called Unit 3 Cellular Energetics: endergonic and exergonic rxn. Today we will be discussing the differences between endergonic and exergonic reactions and how they play a role in metabolic processes.
Segment 1: Introduction to endergonic and exergonic rxn
● Exergonic
○ Release energy
○ Products have less free E than reactants
○ Energetically downhill
○ Tend to be spontaneous
○ Tend to be catabolic aka break down rxn
○ Delta G is neg
■ Remember delta g is free energy aka usable energy
● Endergonic
○ Absorb energy
○ Products have more free E than reactants
○ Energetically uphill
○ Tend to not be spontaneous
○ Tend to be anabolic aka create
○ Delta G is pos
Segment 2: More About endergonic and exergonic rxn
● Example of endergonic rxn
○ Dehydration synthesis
○ Combining molecules
○ Release water
○ Take in energy
● Example of exergonic rxn
○ Hydrolysis of ATP
○ Breaking apart molecules
○ Water molecule is taken in
○ More energy out of system
○ Releases energy
Segment 3: Connection to the Course
● There is a series of intermediate reactions that form a metabolic pathway
● While enzymes play a role in these reactions, an important concept that connects exergonic and
endergonic reactions is coupled reactions
○ This is when a catabolic reaction that breaks down something is coupled with a reaction that
makes something
○ Let's remember that endergonic reactions are usually anabolic exergonic reactions are usually
catabolic
● So in the case of ATP hydrolysis, E is released by the exergonic rxn because remember the bonds are
being broken so E is released and this energy can now go and drive an endergonic reaction
● This coupling of reactions plays a big role in the intermediate reactions that form metabolic pathways
Thank you for listening to this episode of My AP Biology Thoughts. For more student-ran podcasts and digital content, make sure that you visit www.hvspn.com.
Music Credits:
● "Ice Flow" Kevin MacLeod (incompetech.com)
● Licensed under Creative Commons: By Attribution 4.0 License
● http://creativecommons.org/licenses/by/4.0/
Subscribe to our Podcast
Connect with us on Social Media
Twitter @thehvspn
130 епізодів
Поширити
