Anaerobic Respiration Flashcards
Define anaerobic respiration
The controlled release of energy from food without the use of oxygen
What is anaerobic respiration also known as?
Fermentation
Is oxygen required during anaerobic respiration?
No, oxygen is not required, it is an anaerobic process
How many stages are involved during anaerobic respiration?
It is a 1 stage process
Where does anaerobic respiration take place in a cell?
The cytosol of a cell
How much energy is released during anaerobic respiration?
A small amount of energy is released
What does anaerobic respiration initially involve the breakdown of?
Breakdown of glucose into two pyruvic acid (three-carbon) molecules
What are the two most common forms of anaerobic respiration?
Lactic acid fermentation
Alcohol fermentation
In what organisms does lactic acid fermentation occur?
In some anaerobic bacteria and fungi as well as human muscle (when short of oxygen)
What happens to the pyruvic acid (three-carbon) molecule during lactic-acid fermentation?
It is converted into lactic acid
What happens to lactic acid in tired muscle when oxygen becomes available again?
The lactic acid is taken to the liver and broken down
In what organisms does alcohol fermentation take place?
Takes place in some bacteria, fungi (yeast) and plants when they are deprived of oxygen
What happens to the pyruvic acid (three-carbon) molecule during alcohol fermentation?
It is converted into ethanol (alcohol) and Co2
Why is anaerobic respiration considered less efficient than aerobic respiration?
As glucose is only partially broken down to release a small amount of energy
