(a) "Respiration is a vital function of the body". Justify this statement.
(b) What is the main difference between aerobic respiration and anaerobic respiration ? Give one example of each.
(c) What type of respiration takes place (i) in yeast, and (ii) in humans?
(a) "Respiration is a vital function of the body". Justify this statement.
(b) What is the main difference between aerobic respiration and anaerobic respiration ? Give one example of each.
(c) What type of respiration takes place (i) in yeast, and (ii) in humans?
(a)
We all need energy to perform our work. This energy comes from the food we eat. When this food is broken down in our cells then energy is released in the form of adenosine triphosphate or ATP. This breaking down of food to release energy is called respiration and with the help of this process only we can obtain energy to perform any work.
(b)
Aerobic respiration takes place in the presence of oxygen and anaerobic respiration takes place in absence of oxygen. Energy released is more in aerobic respiration ( 38 ATP). Energy released is less in anaerobic respiration ( 2 ATP). There is partial breakdown of glucose in anaerobic respiration. There is complete breakdown of glucose in aerobic respiration.
Aerobic respiration
1. Common in all higher plants and animals
2. The process occurs inside living cells
3. The process occurs in the presence of oxygen
4. It is a permanent process that continuous throughout the life of plants and animals
5. Energy is released in greater amounts in the form of ATP ~ 36 ATP molecules
6. The process is non toxic to both plants and animals
7. End products are CO2 and H2O
Anaerobic respiration
1. Common in certain microorganisms but very rare in all higher plants and animals
2. The process occurs inside living cells, but living cells are not essential in some cases
3. The process occurs in the absence of oxygen
4. It is a permanent process in anaerobic microorganisms but a temporary process in higher plants and animals only under anaerobic condition
5. Energy is released in lesser amounts in the form of ATP ~ 2 ATP molecules. Heat is also generated in fermentation
6.The process often toxic to both plants and animals
7. End products are ethanol and CO2
(c)In yeast there is anaerobic respiration. And in humans there is aerobic respiration.
(a)
We all need energy to perform our work. This energy comes from the food we eat. When this food is broken down in our cells then energy is released in the form of adenosine triphosphate or ATP. This breaking down of food to release energy is called respiration and with the help of this process only we can obtain energy to perform any work.
(b)
Aerobic respiration takes place in the presence of oxygen and anaerobic respiration takes place in absence of oxygen. Energy released is more in aerobic respiration ( 38 ATP). Energy released is less in anaerobic respiration ( 2 ATP). There is partial breakdown of glucose in anaerobic respiration. There is complete breakdown of glucose in aerobic respiration.
Aerobic respiration
1. Common in all higher plants and animals
2. The process occurs inside living cells
3. The process occurs in the presence of oxygen
4. It is a permanent process that continuous throughout the life of plants and animals
5. Energy is released in greater amounts in the form of ATP ~ 36 ATP molecules
6. The process is non toxic to both plants and animals
7. End products are CO2 and H2O
Anaerobic respiration
1. Common in certain microorganisms but very rare in all higher plants and animals
2. The process occurs inside living cells, but living cells are not essential in some cases
3. The process occurs in the absence of oxygen
4. It is a permanent process in anaerobic microorganisms but a temporary process in higher plants and animals only under anaerobic condition
5. Energy is released in lesser amounts in the form of ATP ~ 2 ATP molecules. Heat is also generated in fermentation
6.The process often toxic to both plants and animals
7. End products are ethanol and CO2
(c)In yeast there is anaerobic respiration. And in humans there is aerobic respiration.
