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To live, the human body needs a regular supply of oxygen, which is distributed throughout the body by the red pigment, haemoglobin (Hb) - VCE - SSCE Chemistry - Question 8 - 2005 - Paper 1
Question 8
To live, the human body needs a regular supply of oxygen, which is distributed throughout the body by the red pigment, haemoglobin (Hb). Hb is carried around the bod... show full transcript
Worked Solution & Example Answer:To live, the human body needs a regular supply of oxygen, which is distributed throughout the body by the red pigment, haemoglobin (Hb) - VCE - SSCE Chemistry - Question 8 - 2005 - Paper 1
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b. Using this equation explain, in terms of equilibrium principles, how a low oxygen concentration can lead to the cells in a human body being deprived of oxygen.
Answer
In accordance with Le Chatelier's principle, if the concentration of oxygen in the environment decreases, the equilibrium of the reaction shift to the left to counteract the change.
This results in the dissociation of oxyhaemoglobin back into its components: haemoglobin and oxygen. Therefore, with a lower concentration of oxygen available, less oxyhaemoglobin is formed, leading to a reduced supply of oxygen being transported to the cells in the body. Consequently, the cells experience a deficiency in oxygen, which can hinder their ability to function effectively.
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c. Explain how a high blood count is a useful adaptation to high altitude living.
Answer
At high altitudes, the concentration of oxygen in the air is lower, which can pose challenges for oxygen delivery to the tissues. A higher red blood cell count increases the concentration of haemoglobin in the blood. This adaptation is crucial because it enhances the blood's capacity to carry oxygen.
Thus, with more red blood cells available, individuals living at high altitudes can maintain sufficient oxyhaemoglobin levels even in low oxygen environments. This improved oxygen transport capability is vital for sustaining energy production and cellular functions under conditions where atmospheric oxygen is scarce.