Question and answer
Examples of organisms that respires both aerobically and anaerobically.
An anaerobic organism or anaerobe is any organism that does not require oxygen for growth. It could possibly react negatively and may even die if oxygen is present. [ There are three types: obligate anaerobes, which cannot use oxygen for growth and are even harmed by it aerotolerant organisms, which cannot use oxygen for growth, but tolerate the presence of it facultative anaerobes, which can
grow without oxygen but can utilize oxygen if it is present Contents [hide] 1 Metabolism 1.1 Fermentation 2 Culturing anaerobes 3 References 4 See also [edit]Metabolism Obligate anaerobes may use fermentation or anaerobic respiration. Aerotolerant organisms are strictly fermentative. In the presence of oxygen, facultative anaerobes use aerobic respiration; without oxygen some of them ferment, some use anaerobic respiration. [edit]Fermentation There are many anaerobic fermentative reactions. Fermentative anaerobic organisms mostly use the lactic acid fermentation pathway: C6H12O6 + 2 ADP + 2 phosphate ? 2 lactic acid + 2 ATP The energy released in this equation is approximately 150 kJ per mol, which is conserved in regenerating two ATP from ADP per glucose. This is only 5% of the energy per sugar molecule that the typical aerobic reaction generates. Plants and fungi (e.g., yeasts) generally use alcohol (ethanol) fermentation when oxygen becomes limiting: C6H12O6 + 2 ADP + 2 phosphate ? 2 C2H5OH + 2 CO2 + 2 ATP The energy released is about 180 kJ per mol, which is conserved in regenerating two ATP from ADP per glucose. Anaerobic bacteria and archaea use these and many other fermentative pathways, e.g., propionic acid fermentation, butyric acid fermentation, solvent fermentation, mixed acid fermentation, butanediol fermentation, Stickland fermentation, acetogenesis or methanogenesis. Some anaerobic bacteria produce toxins (e.g., tetanus) [edit]Culturing anaerobes Since normal microbial culturing occurs in atmospheric air which is an aerobic environment, the culturing of anaerobes poses a problem, and a number of techniques are employed by microbiologists when culturing anaerobic organisms. ]
Expert answered|bestWeegy|Points 516|
Question
Asked 10/22/2011 12:46:34 AM
0 Answers/Comments
Get an answer
New answers
Rating

There are no new answers.

Comments

There are no comments.

Add an answer or comment
Log in or sign up first.
18,802,124 questions answered
Popular Conversations
Race is a myth in the sense that one race is superior to another and ...
Weegy: True - Race is a myth in the sense that one race is superior to another and of there being pure races. User: ...
12/20/2014 6:09:11 PM| 2 Answers
Find the slope of the line that passes through the pair of points ...
Weegy: The slope of the line that passes through the pair of points (6.5, 10.5) and (9.5, 7) is b. 0.22 .
12/20/2014 8:46:08 PM| 2 Answers
Write an equation that represents the problem, then solve the ...
Weegy: 4*6=x
12/21/2014 10:22:19 AM| 2 Answers
Multiply. (-8.7)(-1.1) User: divide -5/-20
Weegy: The answer is 100
12/21/2014 10:42:03 AM| 2 Answers
definition of absurdity
12/20/2014 12:13:09 AM| 1 Answers
If your supervisor criticizes the way you handled a certain ...
Weegy: A. clarify how your way of handling it was best. User: You can perform your job well only if you A. ...
12/20/2014 12:00:56 AM| 1 Answers
Personal pronouns take different forms depending on whether they’re ...
Weegy: When we want to show that something belongs to somebody or something, we usually add 's to a singular noun and ...
12/20/2014 12:24:16 AM| 1 Answers
Weegy Stuff
S
L
P
Points 1142 [Total 4986]| Ratings 0| Comments 1142| Invitations 0|Offline
S
L
Points 741 [Total 1432]| Ratings 1| Comments 731| Invitations 0|Offline
S
1
L
1
L
P
P
L
P
Points 693 [Total 14878]| Ratings 1| Comments 683| Invitations 0|Offline
S
Points 681 [Total 681]| Ratings 1| Comments 671| Invitations 0|Offline
S
P
C
L
P
L
1
Points 128 [Total 6447]| Ratings 1| Comments 118| Invitations 0|Offline
S
L
Points 83 [Total 1543]| Ratings 1| Comments 73| Invitations 0|Offline
S
1
L
L
Points 33 [Total 6700]| Ratings 0| Comments 33| Invitations 0|Offline
S
Points 30 [Total 30]| Ratings 0| Comments 0| Invitations 3|Offline
S
Points 23 [Total 29]| Ratings 0| Comments 23| Invitations 0|Offline
S
Points 22 [Total 22]| Ratings 0| Comments 2| Invitations 2|Offline
Home | Contact | Blog | About | Terms | Privacy | Social | ©2014 Purple Inc.