Why can a person get tired quickly when haemoglobin is low?
Answer and explanation
Correct answer: Less oxygen reaches cells and energy production decreases
The governing concept is the role of haemoglobin in transport and aerobic respiration. Haemoglobin in red blood cells binds oxygen in the lungs and carries it to body tissues. If its amount is low, less oxygen reaches cells, so aerobic respiration may produce less usable energy for muscles. This explains tiredness and makes option A correct. The other choices incorrectly assign digestive, urinary or plant functions to human organs.
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What is the correct answer to this question?
Less oxygen reaches cells and energy production decreases
Why is this the correct answer?
The governing concept is the role of haemoglobin in transport and aerobic respiration. Haemoglobin in red blood cells binds oxygen in the lungs and carries it to body tissues. If its amount is low, less oxygen reaches cells, so aerobic respiration may produce less usable energy for muscles. This explains tiredness and makes option A correct. The other choices incorrectly assign digestive, urinary or plant functions to human organs.
Which subject and chapter does this question cover?
This is a Class 10 Science question. Chapter: World of Living. Topic: Life Processes.
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