12 Respiration Flashcards
Define aerobic reapirarion
Controlled release of energy from food using oxygen
Define anaerobic respiration
Controlled release of energy from food without the use of oxygen
Whats another name for anaerobic respiration
Fermentation
What is external respiration
Process by which organisms exchange gases with their environment
Lungs of mammals, gills in fish, opening in plant stems
Internal respiration
Controlled release of energy from food.
Proccess controlled by enzymes
What does ATP stand for
Adenosine triphosphate
Is internal respiration aerobic or anaerobic
Internal respiration can be either aerobic or anaerobic
Balanced equation of Aerobic respiration
Enzymes
C6H12O6+6O2—>6CO2+6H2O+energy
(Glucose)+(oxygn) (CO2)+(water)
What are the end products of aerobic respiration
Carbon dioxide and water
Where does stage one of awrobic reapiration take place
Cytosol
(This is the cytoplasm minus the cell organelles)
Is stage one of aerobic respiration anaerobic or aerobic
The first stage of aerobic respiration is anaerobic as it forsnt require oxygen to take place
Is stage two of aerobic respiration anaerobic or aerobic
The second stage of aerobic respiration is aerobic as it requires and uses oxygen
Which stage of aerobic respiration releases the most energy
Stage two releases a large amount of energy
This means it is as efficient as an energy release system
Where does stage 2 of aerovic respiration take placs
Mitochondria
Word equation to represent stage one of respiration
Glucose->two 3-carbon molecules+ a small amount of energy
What does stage one of respiration involve
Glucose (a 6 carbon sugar) into two 3carbon molecules.
Small amount of energy is released and used to form a small number of ATP molecules
What does stage two of aerobic respiration involve
Breakdown of the 3-carbon molecules to carbondioxide and water.
Its a complete breakdown of the three-carbon molecules so it releases a large amount of energy
Anaerobic respiration is a stage ____ process
1
It does not involve stage 2
Where does anaerobic respiration take place
Cytosol
Does anaerobic respiration release a small or big amount of energy
Small
2 common types of fermentation
Lactic acid fermentation
Alcohol fermentation
Why is anaerobic respiration far less efficient than aerobic respiration
Because glucose is only partially broken down
Where does lactic acid fermentation take place
Occurs in some bacteria and fungi (which are called anaerobes)
Human muscle when its short of oxygen
Word equation to represent lactic acid fermentation
Glucose->2 Lactic Acid+ Small amnt of energy
