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Question
What would be the consequences of a deficiency of haemoglobin in our bodies?
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Solution
A deficiency of haemoglobin in the human body directly results in anaemia, which significantly reduces the blood’s oxygen-carrying capacity. Because haemoglobin is the vital iron-rich protein in red blood cells responsible for binding and transporting oxygen from the lungs to all body tissues, its shortage starves the cells of the oxygen required for cellular respiration and energy production.
RELATED QUESTIONS
Given below are the end products of different reactions involving glucose.

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(i) Anaerobic reaction =
(ii) Reaction in the human muscles =
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(iv) Reaction in the plant cells =
(v) Reaction in the liver
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A, B and C are three living organisms. The organism A is a unicellullar fungus which can live without air. It is used in the commercial production of an organic compound P from molasses. The organism B is a unicellular animal which lives in water and feeds and moves by using pseudopodia. It breathes through an organelle Q. The organism C is a tiny animal which acts as a carrier of malarial parasite. It breathes and respires through a kind of tiny holes R and air-tubes S in its body. |
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| There is a pair of bean-shaped organs P in the human body towards the back, just above the waist. A waste product Q formed by the decomposition of unused proteins in the liver is brought into organ P through blood by an artery R. The numerous tiny filters S present in organ P clean the dirty blood by removing the waste product Q. The clean blood goes into circulation through a vein T. The waste substance Q, other waste salts, and excess water form a yellowish liquid U which goes from organ P into a bag-like structure V through two tubes W. This liquid is then thrown out of the body through a tube X. |
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Match the items in Column I with the ones most appropriate in Column II. Rewrite the matching pairs.
|
Column I |
Column II |
|
(a) Alveoli |
(i) where aerobic respiration takes place |
|
(b) Bronchioles |
(ii) lined with hair |
|
(c) Nasal Chamber |
(iii) diffusion of gases |
|
(d) Bronchi |
(iv) small air tubes |
|
(v) an inverted Y shaped tube |
|
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(vi) a common passage for food and air |
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"Kidney and excretion".
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Ciliated epithelium lining the respiratory tract
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During respiration exchange of gases take place in
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Insects have spiracles on the lower surface of the body
