Aerobic and Anaerobic Respiration Flashcards
What is aerobic respiration?
Aerobic respiration is the chemical process where glucose, in the presence of oxygen is completely broken down to produce energy and waste products carbon dioxide and water. It releases 38 molecules of ATP. It takes place in the presence of enzymes. Most of the chemical reactions during this process takes place in the mitochondria.
What are aerobes?
An aerobic organism or aerobe is any organism that requires oxygen for growth.
What is anaerobic respiration?
Anaerobic respiration is the chemical process where glucose, in the absence of oxygen is incompletely broken down to produce energy and lactic acids as a waste product. It releases 2 molecules of ATP and it takes place in the presence of enzymes.
What are anaerobes?
An anaerobic organism or anaerobe is any organism that does not require oxygen for growth
What is the word equation of aerobic respiration?
Glucose + Oxygen –> Carbon Dioxide + Water + Energy
What is the word equation anaerobic respiration?
Glucose –> Lactic Acids + Energy
Differentiate between aerobic and anaerobic respiration.
- Aerobic respiration takes place in the presence of oxygen and anaerobic respiration takes place in the absence of oxygen
- Aerobic respiration produces carbon dioxide and water as waste products, whereas anaerobic respiration forms lactic acids as waste products
- Much less energy is released during anaerobic respiration (2 molecules of ATP) than during aerobic respiration (38 molecules of ATP).
Where does anaerobic respiration take place in animals?
Anaerobic respiration takes place mainly takes place in muscles cells during vigorous exercise.
When animals exercise vigorously, their muscles have a higher demand for energy then when they are resting. However, their bodies can only produce and deliver a certain amount of oxygen to the muscle cells during aerobic respiration.
In this scenario, as much glucose as possible is broken during during aerobic respiration whereas some glucose is broken down during anaerobic respiration and produces lactic acids instead.
However, there is still energy stored within the bonds of lactic acid molecules which could be used by the muscle cells. Therefore, less energy is released when glucose is broken down anaerobically.
How does anaerobic respiration take place in yeast?
The products of anaerobic respiration are taken advantage of by yeast.
During bread making, the caron dioxide causes the dough to rise.
In the process of brewing, the ethanol produced gives beer its alcoholic nature and the carbon dioxide produces makes the beer fizz.
What is the word equation of anaerobic respiration in yeast?
Glucose –> Alcohol + Carbon Dioxide
How do plants respire?
Plants do not breathe, they respire. During respiration and photosynthesis, gases go in and out of the plant through little holes called stomata, using diffusion, not breathing.
In simpler words - Plants do not breathe, they respire. Gases diffuse in and out through pores called stomata.
What happens after humans stops exercising?
After exercise, muscles remove lactic acid to maintain cell pH levels, in a process known as ‘repaying the oxygen debt’. This process involves combining lactic acid with oxygen, and the longer it takes for breathing rate and depth to return to normal, the more lactic acid produced.
