Complete the following chart.

   Protein   Physiological role
 Collagen  (i)
 (ii)  Responsible for muscle contraction
 Immunoglobulin  (iii)
 (iv)  Significant in Respiration
 Fibrinogen  (v)
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1 Answers

   Protein   Physiological role
 Collagen  Provides strength and plays structural role
 2. Myosin & Actin  Responsible for muscle contraction
 3. Immunoglobulin  Protects the body from infection
 4. Haemoglobin  Significant in Respiration
 Fibrinogen  Responsible for normal clotting of blood.

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