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.
17,089,918 questions answered
Popular Conversations
A day on Venus lasts longer ________?
Weegy: User: The most massive planet in our solar system with dozens of moons and an enormous magnetic field is
8/19/2014 5:24:35 AM| 2 Answers
The Mayflower Compact was:
Weegy: The Mayflower Compact provided the colony of Plymouth with ( 1 )a simple constitution by which (2 ) the freemen ...
8/19/2014 8:08:50 AM| 2 Answers
Natural
8/19/2014 11:01:12 AM| 2 Answers
What is a verb?
8/19/2014 2:04:34 PM| 2 Answers
What is the term for a tale about a human hero that is based on ...
Weegy: The term for a tale about a human hero that is based on historical fact is a legend. User: n "The Red-Headed ...
8/19/2014 4:26:07 PM| 2 Answers
The charge on a proton is a. negative, and the charge on an ...
Weegy: Protons have a positive charge, electrons have a negative charge, and neutrons have no charge. User: The ...
8/19/2014 4:27:36 PM| 2 Answers
Express as ordinary numbers. 8.97 x 10-3 0.0897 0.00897 8,970
Weegy: 68.047
8/20/2014 6:40:43 AM| 2 Answers
Weegy Stuff
S
R
L
1
1
P
C
1
P
1
1
L
P
C
P
C
1
P
C
L
P
C
1
P
C
P
C
Points 1758 [Total 23358]| Ratings 2| Comments 1738| Invitations 0|Online
S
L
1
L
Points 1338 [Total 5314]| Ratings 5| Comments 1288| Invitations 0|Offline
S
L
C
P
C
1
L
L
Points 1194 [Total 14808]| Ratings 7| Comments 1124| Invitations 0|Offline
S
L
1
1
1
1
L
1
Points 1152 [Total 8859]| Ratings 2| Comments 1132| Invitations 0|Offline
S
L
P
C
L
P
C
P
C
L
P
C
P
C
P
C
Points 1061 [Total 16088]| Ratings 2| Comments 1041| Invitations 0|Offline
S
L
P
C
P
C
1
L
P
C
L
P
C
P
C
P
C
P
C
Points 840 [Total 18411]| Ratings 0| Comments 840| Invitations 0|Offline
S
1
L
Points 401 [Total 4965]| Ratings 0| Comments 401| Invitations 0|Offline
S
1
L
1
L
P
P
L
Points 355 [Total 11016]| Ratings 1| Comments 345| Invitations 0|Offline
S
Points 242 [Total 242]| Ratings 1| Comments 222| Invitations 1|Offline
S
Points 217 [Total 228]| Ratings 3| Comments 157| Invitations 3|Offline
Home | Contact | Blog | About | Terms | Privacy | Social | ©2014 Purple Inc.