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Question

(i) Which one of the following is a disaccharide : Starch, Maltose, Fructose, Glucose?
(ii) What is the difference between fibrous proteins and globular protein?
(iii) Write the name of vitamins whose deficiency causes bone deformities in children.

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Solution

(i) Maltose is a disaccharide, as it contains α−D glucose units.

(ii) Fibrous proteins and globular proteins differ in size, shape, solubility, appearance as well as in function. Fibrous proteins consist of repetition of a single unit to form chains that act as connective tissues and give strength and joint mobility. Globular proteins are spherical in shape and consist of long chains with numerous branches and offshoots which make them great as transport proteins. Examples of fibrous proteins are collagen, elastin, keratin, silk, etc. Examples of globular protein are myoglobin, hemoglobin, casein, insulin, etc.

(iii) The deficiency that causes bone deformities in children is vitamin D.


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