Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
17 Cards in this Set
- Front
- Back
|
What is an e- acceptor? |
takes e- and become reduced |
|
|
what is an e- donor? |
gives e- and becomes oxidized |
|
|
what is fermentation? |
organic compound serves as both an e- donor and acceptor and ATP is produced by substrate level phosphorylation |
|
|
what is substrate level phosphorylation? |
production of ATP by transferring a high energy P-group from another substrate onto ADP |
|
|
what is respiration? |
e- are taken from an e- donor and passed down an e- transport chain (making a PMF) |
|
|
what is oxidative phsophorylation? |
production of ATP at the expense of PMF formed by e- transport chain |
|
|
what is an autotroph? |
an organism that uses CO2 as its carbon source |
|
|
what is a chemolithotroph? |
an organism that uses inorganic chemicals as its energy source |
|
|
what is a chemoorganotroph? |
an organism that uses organic chemicals as an energy source |
|
|
Oxidized form +e- --> reduced form e.g. 2H+ + e- --> H2 |
Remember: OIL RIG **Reduced substance whose reduction potential is more (-) donates e- to oxidized substance whose reduction potential is more (+)**** |
|
|
dEo'= (Eo' of reduc. rxn) - (Eo' of oxid. rxn) dGo'= -nF(dEo') |
If dE0' is positive, rxn is favorable The farther that e- fall on the e- tower, the more energy there is released. |
|
|
How do bacteria store the energy they get from redox reactions? |
1. proton gradient across the CM 2. high energy compounds that're used to power unfavorable chemical rxns |
|
|
Catabolism: e- taken from organic/ inorganic molecules-> transferred to e- carriers-> reduced form of carriers donate e- to e- transport chains |
Common currency for oxidation and reduction= NAD+ and FAD |
|
|
Chemoorganotrophs |
get their carbons and e- from the same source of organic compounds like us! |
|
|
Chemolithotrophs |
get their carbons and e- from 2 different sources both chemical! undergo carbon fixation |
|
|
Phototrophs |
get their energy from light and e- from water and carbon from either organic compounds or CO2 |
|
|
FermentationClose |
- occurs in absence of e- acceptor and can be used for respiration - partial oxidation - No ETC - energetically inefficient - ATP generated by substrate-level phosphorylation |
