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
Ask Weegy or search for an answer now. (Free)
New answers
Rating

There are no new answers.

Comments

There are no comments.

Add an answer or comment
Log in or sign up first.
16,966,047 questions answered
Popular Conversations
Given: 9x > -36. Choose the solution set. {x | x 4} {x | x ...
Weegy: Hi.welcome to weegy.Kindly state the choices of your question.Thanks for using weegy. [smile] User: Given: 9x ...
7/29/2014 10:24:41 AM| 5 Answers
Fill in the blank with the appropriate number. 2/5* ____ = 1
Weegy: A blank is a type of cartridge for a firearm that contains gunpowder but no bullet or shot. When fired, the ...
7/29/2014 5:56:58 PM| 4 Answers
features of a simple network and the network infrastructure for alarg ...
Weegy: The simple network consists of two or more connected computers and the basic network components include ...
7/29/2014 5:02:00 AM| 3 Answers
A line has a slope of 1/2 and a run = 50. What is the rise?
Weegy: Slope = rise/ run Rise = slope x run = 1/2x50 = 25 User: Find the next term of the given sequence. 1.31, 2.54, ...
7/29/2014 8:35:14 AM| 3 Answers
One person can do a certain job in twenty-one minutes, and another ...
Weegy: 12 min User: Which of the following equations has only one solution? x 2 = 9 x(x - 1) = 9 x 2 - 6x + 9 = ...
7/29/2014 11:13:10 AM| 3 Answers
A boat that travels 23 miles per hour in still water is traveling ...
Weegy: 75 miles User: Solve the following system of equations by the substitution method. 5x = y + 6 2x - 3y = ...
7/29/2014 1:55:03 PM| 3 Answers
Which of the following points is in the solution set of y User: Find ...
Weegy: The center of the circle is (2,6). User: Which of the following sets could be the sides of a right ...
7/29/2014 8:47:02 AM| 2 Answers
The sum of 1/6, 2/3, and 1/4 is
7/29/2014 10:01:22 AM| 2 Answers
What makes the EPA one of the weakest agencies? a. funded mandates c. ...
Weegy: a. funded mandates User: When Congress establishes a cost for crops, it is called a(n) a. price ...
7/29/2014 2:22:51 PM| 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
Points 2460 [Total 21460]| Ratings 1| Comments 2450| Invitations 0|Online
S
L
P
C
P
C
1
L
P
C
L
P
C
P
C
P
C
Points 2268 [Total 17397]| Ratings 0| Comments 2268| Invitations 0|Offline
S
L
P
C
L
P
C
P
C
L
P
C
P
C
Points 2200 [Total 14754]| Ratings 1| Comments 2190| Invitations 0|Offline
S
L
1
Points 1687 [Total 3870]| Ratings 2| Comments 1667| Invitations 0|Offline
S
L
1
1
1
1
L
1
Points 1471 [Total 7648]| Ratings 2| Comments 1451| Invitations 0|Offline
S
1
L
1
L
P
P
L
Points 1005 [Total 10613]| Ratings 0| Comments 1005| Invitations 0|Offline
S
1
L
Points 860 [Total 4536]| Ratings 2| Comments 840| Invitations 0|Online
S
P
C
L
P
L
1
Points 816 [Total 5870]| Ratings 4| Comments 776| Invitations 0|Offline
S
Points 173 [Total 177]| Ratings 0| Comments 163| Invitations 1|Offline
S
R
R
Points 160 [Total 348]| Ratings 1| Comments 140| Invitations 1|Offline
Home | Contact | Archive | Blog | About | Terms | Privacy | Social | ©2014 Purple Inc.