Fermentation percentage *sorry*

Discussion of all aspects of cellular structure, physiology and communication.

Moderators: honeev, Leonid, amiradm, BioTeam

Post Reply
biology_is_power
Garter
Garter
Posts: 20
Joined: Sun Mar 05, 2006 6:23 am

Fermentation percentage *sorry*

Post by biology_is_power » Sun Mar 05, 2006 6:36 am

greetings comrades:

during the fermentation process, 40 % of he energy present ina glucose molecule. does the other %60 get lost with the heat?

thanks very much

|sirius|
Garter
Garter
Posts: 11
Joined: Fri Mar 03, 2006 1:30 am

Post by |sirius| » Sun Mar 05, 2006 6:54 am

40% of the energy in a glucose molecule is stored in ATP only when it goes through the whole long aerobic respiration process. I think 60% of it is gone out as heat.

But in fermentation, an even lower percent of the energy is stored in ATP. I believe a lot of it goes into replenishing NAD+ or into the ethanol (in yeast or bacteria) or lactate (in us).

Lactic acid forms an equilibrium with pyruvate, so I guess it can go back to pyruvate and complete Krebs and the electron transport chain to make more ATP later when there is oxygen. I'm not sure about the exact %s.

biology_is_power
Garter
Garter
Posts: 20
Joined: Sun Mar 05, 2006 6:23 am

Post by biology_is_power » Sun Mar 05, 2006 7:02 am

ohhh thats right. in fermentation, isn't there 2 % of energy stored in ATP?

|sirius|
Garter
Garter
Posts: 11
Joined: Fri Mar 03, 2006 1:30 am

Post by |sirius| » Sun Mar 05, 2006 7:04 am

i think so.....actually, I don't know about percents, but the only ATP you get from fermentation is from glycolysis, so that's a net of 2 ATP per glucose
Draco Dormiens Nunquam Titillandus

biology_is_power
Garter
Garter
Posts: 20
Joined: Sun Mar 05, 2006 6:23 am

Post by biology_is_power » Sun Mar 05, 2006 7:07 am

i know for sure that 25% of energy is stored in an ATP when there is oxygen in a fermentation. without oxygen i know is alot less

|sirius|
Garter
Garter
Posts: 11
Joined: Fri Mar 03, 2006 1:30 am

Post by |sirius| » Sun Mar 05, 2006 7:08 am

yup, it's 2% and it's also 2 ATP
Draco Dormiens Nunquam Titillandus

biology_is_power
Garter
Garter
Posts: 20
Joined: Sun Mar 05, 2006 6:23 am

Post by biology_is_power » Sun Mar 05, 2006 7:11 am

alright. thanks alot i appreciate your help

User avatar
MrMistery
Inland Taipan
Inland Taipan
Posts: 6832
Joined: Thu Mar 03, 2005 10:18 pm
Location: Romania(small and unimportant country)
Contact:

Post by MrMistery » Sun Mar 05, 2006 6:29 pm

i deleted the other topic. please don't double post
"As a biologist, I firmly believe that when you're dead, you're dead. Except for what you live behind in history. That's the only afterlife" - J. Craig Venter

Post Reply

Who is online

Users browsing this forum: No registered users and 2 guests