Discussion between haemoglobin and chlorophyll about respiration :
Haemoglobin :Hello good morning Chlorophyll. How are you ?
Chlorophyll : Very good morning Haemoglobin. I am fine.
Haemoglobin :I am also doing well. Tell me Chlorophyll, who are you ?
Chlorophyll : I am a green coloured pigment present in leaves of plants .
Haemoglobin :How many different types of chlorophylls are there ?
Chlorophyll : We are four types i.e., Chlorophyll a, Chlorophyll b, Chlorophyll c and Chlorophyll d.
Haemoglobin :May I know your job in leaves ?
Chlorophyll :Yes. Why not ? I am an essential factor required for the process of photosynthesis in plants.
Haemoglobin : Oh! You are participating in the process of preparing food materials in green plants.
Chlorophyll :Now tell me about your presence .
Haemoglobin : I am present only in animal cells. That too in the red blood cells of the blood. The red colour of the blood is due to my presence.
Chlorophyll : Then tell me about your function in respiration ?
Haemoglobin : During respiration, I carry oxygen to the cells in the body parts
Chlorophyll :How are you able to do this ?
Haemoglobin :I have an oxygen binding. element iron. It binds oxygen on four corners of it. I form oxy-haemoglobin with oxygen in the lungs .
Chlorophyll : What happens to the digested food in the cells ?
Haemoglobin : In cells, oxygen breakdown the glucose molecule into `CO_2` and `H_2O` releasing large amount of energy. Around 38 ATP molecules are produced.
Chlorophyll : What is the use of this energy ?
Chlorophyll : What happens if you do not carry oxygen and supply it to cells ?
Haemoglobin : The food materials are not oxidised and the energy will not be released .
Chlorophyll :Then what happens to the cell ? What does it do ?
Haemoglobin :In the absence of oxygen the cells adopt anaerobic respiration during which very little amount of energy is released. i.e. , 2ATP molecules are formed .
Chlorophyll : Where do we find this type of anaerobic respiration ?
Haemoglobin : Anaerobic respiration occurs in some bacteria , yeast cell and muscle cells. Respiration occurs in the cytoplasm and mitochondria of the cell.
Chlorophyll :Is all the energy released during r espiration utilized by the cell ?
Haemoglobin : No. Some amount of energy will be stored in the form of a compound called Adenosine triphosphate (ATP).
Chlorophyll :Thank you Haemoglobin. You have taught me everything about respiration : In our next meeting we will discuss another topic.
Haemoglobin :Thank you Chlorophyll for your patience .
